sin53°cos37°+cos53°sin37°=______．

sin53°=4/5。sin53° 其实就是“勾三股四弦五”的三角形，sin是对边比斜边，所以sin53°=4：5 等于4/5。在RT△ABC中，如果锐角A确定，那么角A的对边与邻边的比便随之确定，这个比叫做角A 的正切，记作tanA，即tanA=角A 的对边/角A的邻边。和角公式：sin ( α ± β ) = sinα · cosβ ± cosα · sinβsin ( α + β + γ ) = sinα · cosβ · cosγ + cosα · sinβ · cosγ + cosα · cosβ · sinγ - sinα · sinβ · sinγcos ( α ± β ) = cosα cosβ u2213 sinβ sinαtan ( α ± β ) = ( tanα ± tanβ ) / ( 1 u2213 tanα tanβ )

sin53u3002u22480.7986

哥们,你这个应该是个要拿计算器算的,或者就是有个小册子,你要查的 答案 sin53=0.39592515 保留几位小数,自己定夺

哥们，你这个应该是个要拿计算器算的，或者就是有个小册子，你要查的答案 sin53=0.39592515 保留几位小数，自己定夺

这个在物理中就很好说啦.其实若是 数学算的话肯定时无理数啦但是注意 sin53=0.8 sin37=0.6 cos53=sin37 cos37=sin53 tan37=0.75 这个在物理中就是取约等于了 还有啦sin（90－x）＝cos x 基本公式还是要认真记记啦

　　sin53°等于五分之四。 　　sin表示的是正弦值，在一个直角三角形中，正弦是一个角的对边和三角形的斜边的比值。粗略计算来说，sin 53°=4/5，但其实精确计算来说应该是sin[arcsin(4/5)]=3/5。

0.79863 用电脑上的计算器，选择科学计算器 角度 先点sin 在输入角度 即可

这应该是一个直角三角形，直角边为3和4，斜边为5，sin53应该是4/5. 那就是arcsin53 度

咱们算题的时候,一般按约等于算,cos53=0.6,sin53=0.8.教你怎样记得深刻,这个,其实就可以记成,勾三股四弦五的“标准”直角三角形.53度正好是长度为 4 的直角边所对的角.如果你想要精确的数,可以用计算器按一下.

咱们算题的时候，一般按约等于算，cos53=0.6，sin53=0.8。教你怎样记得深刻，这个，其实就可以记成，勾三股四弦五的“标准”直角三角形。53度正好是长度为 4 的直角边所对的角。如果你想要精确的数，可以用计算器按一下。

53度！！！

cos53"=sin37=0.6 sin53=cos37=0.8三角函数是基本初等函数之一，是以角度（数学上最常用弧度制，下同）为自变量，角度对应任意角终边与单位圆交点坐标或其比值为因变量的函数。也可以等价地用与单位圆有关的各种线段的长度来定义。三角函数在研究三角形和圆等几何形状的性质时有重要作用，也是研究周期性现象的基础数学工具。三角函数一般用于计算三角形中未知长度的边和未知的角度，在导航、工程学以及物理学方面都有广泛的用途。另外，以三角函数为模版，可以定义一类相似的函数，叫做双曲函数。常见的双曲函数也被称为双曲正弦函数、双曲余弦函数等等。三角函数（也叫做圆函数）是角的函数；它们在研究三角形和建模周期现象和许多其他应用中是很重要的。

三角函数是数学中属于初等函数中的超越函数的一类函数。它包含六种基本函数：正弦、余弦、正切、余切、正割、余割。附：普通值表sin1=0.01745240643728351 sin2=0.03489949670250097 sin3=0.05233595624294383 sin4=0.0697564737441253 sin5=0.08715574274765816 sin6=0.10452846326765346 sin7=0.12186934340514747 sin8=0.13917310096006544 sin9=0.15643446504023087 sin10=0.17364817766693033 sin11=0.1908089953765448 sin12=0.20791169081775931 sin13=0.22495105434386497 sin14=0.24192189559966773 sin15=0.25881904510252074 sin16=0.27563735581699916 sin17=0.2923717047227367 sin18=0.3090169943749474 sin19=0.3255681544571567 sin20=0.3420201433256687 sin21=0.35836794954530027 sin22=0.374606593415912 sin23=0.3907311284892737 sin24=0.40673664307580015 sin25=0.42261826174069944 sin26=0.4383711467890774 sin27=0.45399049973954675 sin28=0.4694715627858908 sin29=0.48480962024633706 sin30=0.49999999999999994 sin31=0.5150380749100542 sin32=0.5299192642332049 sin33=0.544639035015027 sin34=0.5591929034707468 sin35=0.573576436351046 sin36=0.5877852522924731 sin37=0.6018150231520483 sin38=0.6156614753256583 sin39=0.6293203910498375 sin40=0.6427876096865392 sin41=0.6560590289905073 sin42=0.6691306063588582 sin43=0.6819983600624985 sin44=0.6946583704589972 sin45=0.7071067811865475 sin46=0.7193398003386511 sin47=0.7313537016191705 sin48=0.7431448254773941 sin49=0.7547095802227719 sin50=0.766044443118978 sin51=0.7771459614569708 sin52=0.7880107536067219 sin53=0.7986355100472928 sin54=0.8090169943749474 sin55=0.8191520442889918 sin56=0.8290375725550417 sin57=0.8386705679454239 sin58=0.848048096156426 sin59=0.8571673007021122 sin60=0.8660254037844386 sin61=0.8746197071393957 sin62=0.8829475928589269 sin63=0.8910065241883678 sin64=0.898794046299167 sin65=0.9063077870366499 sin66=0.9135454576426009 sin67=0.9205048534524404 sin68=0.9271838545667873 sin69=0.9335804264972017 sin70=0.9396926207859083 sin71=0.9455185755993167 sin72=0.9510565162951535 sin73=0.9563047559630354 sin74=0.9612616959383189 sin75=0.9659258262890683 sin76=0.9702957262759965 sin77=0.9743700647852352 sin78=0.9781476007338057 sin79=0.981627183447664 sin80=0.984807753012208 sin81=0.9876883405951378 sin82=0.9902680687415704 sin83=0.992546151641322 sin84=0.9945218953682733 sin85=0.9961946980917455 sin86=0.9975640502598242 sin87=0.9986295347545738 sin88=0.9993908270190958 sin89=0.9998476951563913 sin90=1 cos1=0.9998476951563913 cos2=0.9993908270190958 cos3=0.9986295347545738 cos4=0.9975640502598242 cos5=0.9961946980917455 cos6=0.9945218953682733 cos7=0.992546151641322 cos8=0.9902680687415704 cos9=0.9876883405951378 cos10=0.984807753012208 cos11=0.981627183447664 cos12=0.9781476007338057 cos13=0.9743700647852352 cos14=0.9702957262759965 cos15=0.9659258262890683 cos16=0.9612616959383189 cos17=0.9563047559630355 cos18=0.9510565162951535 cos19=0.9455185755993168 cos20=0.9396926207859084 cos21=0.9335804264972017 cos22=0.9271838545667874 cos23=0.9205048534524404 cos24=0.9135454576426009 cos25=0.9063077870366499 cos26=0.898794046299167 cos27=0.8910065241883679 cos28=0.882947592858927 cos29=0.8746197071393957 cos30=0.8660254037844387 cos31=0.8571673007021123 cos32=0.848048096156426 cos33=0.838670567945424 cos34=0.8290375725550417 cos35=0.8191520442889918 cos36=0.8090169943749474 cos37=0.7986355100472928 cos38=0.7880107536067219 cos39=0.7771459614569709 cos40=0.766044443118978 cos41=0.754709580222772 cos42=0.7431448254773942 cos43=0.7313537016191705 cos44=0.7193398003386512 cos45=0.7071067811865476 cos46=0.6946583704589974 cos47=0.6819983600624985 cos48=0.6691306063588582 cos49=0.6560590289905074 cos50=0.6427876096865394 cos51=0.6293203910498375 cos52=0.6156614753256583 cos53=0.6018150231520484 cos54=0.5877852522924731 cos55=0.5735764363510462 cos56=0.5591929034707468 cos57=0.5446390350150272 cos58=0.5299192642332049 cos59=0.5150380749100544 cos60=0.5000000000000001 cos61=0.4848096202463371 cos62=0.46947156278589086 cos63=0.4539904997395468 cos64=0.43837114678907746 cos65=0.42261826174069944 cos66=0.4067366430758004 cos67=0.3907311284892737 cos68=0.3746065934159122 cos69=0.35836794954530015 cos70=0.3420201433256688 cos71=0.32556815445715675 cos72=0.30901699437494745 cos73=0.29237170472273677 cos74=0.27563735581699916 cos75=0.25881904510252074 cos76=0.24192189559966767 cos77=0.22495105434386514 cos78=0.20791169081775923 cos79=0.19080899537654491 cos80=0.17364817766693041 cos81=0.15643446504023092 cos82=0.13917310096006546 cos83=0.12186934340514749 cos84=0.10452846326765346 cos85=0.08715574274765836 cos86=0.06975647374412523 cos87=0.052335956242943966 cos88=0.03489949670250108 cos89=0.0174524064372836 cos90=0 tan1=0.017455064928217585 tan2=0.03492076949174773 tan3=0.052407779283041196 tan4=0.06992681194351041 tan5=0.08748866352592401 tan6=0.10510423526567646 tan7=0.1227845609029046 tan8=0.14054083470239145 tan9=0.15838444032453627 tan10=0.17632698070846497 tan11=0.19438030913771848 tan12=0.2125565616700221 tan13=0.2308681911255631 tan14=0.24932800284318068 tan15=0.2679491924311227 tan16=0.2867453857588079 tan17=0.30573068145866033 tan18=0.3249196962329063 tan19=0.34432761328966527 tan20=0.36397023426620234 tan21=0.3838640350354158 tan22=0.4040262258351568 tan23=0.4244748162096047 tan24=0.4452286853085361 tan25=0.4663076581549986 tan26=0.4877325885658614 tan27=0.5095254494944288 tan28=0.5317094316614788 tan29=0.554309051452769 tan30=0.5773502691896257 tan31=0.6008606190275604 tan32=0.6248693519093275 tan33=0.6494075931975104 tan34=0.6745085168424265 tan35=0.7002075382097097 tan36=0.7265425280053609 tan37=0.7535540501027942 tan38=0.7812856265067174 tan39=0.8097840331950072 tan40=0.8390996311772799 tan41=0.8692867378162267 tan42=0.9004040442978399 tan43=0.9325150861376618 tan44=0.9656887748070739 tan45=0.9999999999999999 tan46=1.0355303137905693 tan47=1.0723687100246826 tan48=1.1106125148291927 tan49=1.1503684072210092 tan50=1.19175359259421 tan51=1.234897156535051 tan52=1.2799416321930785 tan53=1.3270448216204098 tan54=1.3763819204711733 tan55=1.4281480067421144 tan56=1.4825609685127403 tan57=1.5398649638145827 tan58=1.6003345290410506 tan59=1.6642794823505173 tan60=1.7320508075688767 tan61=1.8040477552714235 tan62=1.8807264653463318 tan63=1.9626105055051503 tan64=2.050303841579296 tan65=2.1445069205095586 tan66=2.246036773904215 tan67=2.355852365823753 tan68=2.4750868534162946 tan69=2.6050890646938023 tan70=2.7474774194546216 tan71=2.904210877675822 tan72=3.0776835371752526 tan73=3.2708526184841404 tan74=3.4874144438409087 tan75=3.7320508075688776 tan76=4.0107809335358455 tan77=4.331475874284153 tan78=4.704630109478456 tan79=5.144554015970307 tan80=5.671281819617707 tan81=6.313751514675041 tan82=7.115369722384207 tan83=8.144346427974593 tan84=9.514364454222587 tan85=11.43005230276132 tan86=14.300666256711942 tan87=19.08113668772816 tan88=28.636253282915515 tan89=57.289961630759144 tan90=(无限)

可以证明Sin53是无理数，约等于0.8

操作方法如下：1、点击打开手机上的计算器。2、其次，在计算器中，点击左下角的开关图标，切换到一个特殊的数学计算器。3、切换到专用的数学计算器后，点击左边第二按钮，切换到求反三角函数模式。4、输入自己计算的反三角函数，然后按等号就可以得到结果。如下图所示，求出正弦函数的反三角函数

sin53°与tan37°比较大小为sin53°＞tan37°。解：53°+37°=90°。那么53°、37°和90°则是直角三角形的三个角。而且这个三角形直角边分别为3和4，斜边为5。所以sin53°=4/5，tan37°=3/4。而4/5-3/4=16/20-15/20=1/20＞0，则4/5＞3/4。即sin53°＞tan37°。直角三角形性质直角三角形两直角边的平方和等于斜边的平方。在直角三角形中，两个锐角互余。直角三角形中，斜边上的中线等于斜边的一半（即直角三角形的外心位于斜边的中点，外接圆半径R=C/2）。该性质称为直角三角形斜边中线定理。分数的加减法异分母分数相加减，先通分，即运用分数的基本性质将异分母分数转化为同分母分数，改变其分数单位而大小不变，再按同分母分数相加减法去计算，最后能约分的要约分。同分母分数相加减，分母不变，即分数单位不变，分子相加减，能约分的要约分。以上内容参考：百度百科-分数

sin(37°) = 0.60181502315205。 Sin53度等于 0.79863。

五分之四

sin53°=0.8

0.8 或 4/5

解：SinB＝3／5＝0.6，∴∠B＝37°∠A＝90°－37°＝53°，∠C是直角

sin30=cos60=0.5 cos30=sin60=sin120=-cos150=2分之根号3 tan30=cot60=-cot120=-tan150=3分之根号3 sin45=cos45=2分之根号2 tan45=1 sin53=cos37=0.8 sin37=cos53=0.6 sin160=0.3 cos160=-0.9 tan160=-0.4

0.799。sin的意思是正弦值，正弦值是在直角三角形中，对边的长比上斜边的长的值。任意锐角的正弦值等于它的余角的余弦值。sin53度约等于0.799。

哥们,你这个应该是个要拿计算器算的,或者就是有个小册子,你要查的 答案 sin53=0.39592515 保留几位小数,自己定夺

sin 53° 其实就是“勾三股四玄五”的三角形.sin是对边比斜边.所以sin53°=4：5 等于4/5。sin53度约等于 0.7986355100473sin53度 在初中的学习中就是特殊角了，勾三股四弦五，53度角我们认为近似对应股四，37度角我们近似认为对应勾三，那么sin53为 4/5, cos53为 3/5sin78°等于0.96

= =sin 53° 其实就是“勾三股四玄五”的三角形.sin是对边比斜边. 所以sin53°=4：5 等于4/5 有问题欢迎向我【定向求助】哦 我将在第一时间内尽力为您解答(^o^)/~ o 0 ……………by:281116340

　　sin53度约等于0.7986。

= =sin 53° 其实就是“勾三股四玄五”的三角形.sin是对边比斜边. 所以sin53°=4：5 等于4/5 有问题欢迎向我【定向求助】哦 我将在第一时间内尽力为您解答(^o^)/~ o 0 ……………by:281116340

咱们算题的时候,一般按约等于算,cos53=0.6,sin53=0.8.教你怎样记得深刻,这个,其实就可以记成,勾三股四弦五的“标准”直角三角形.53度正好是长度为 4 的直角边所对的角.如果你想要精确的数,可以用计算器按一下.

37°*sin(53°)=0.51573630942577 希望能够帮到您！ 53度 正弦0.8 余弦0.6 正切1.33 37度 正弦0.6 余弦0.8 正切0.75 37°*sin(53°)=0.51573630942577 希望能够帮到您！ 53度 正弦0.8 余弦0.6 正切1.33 37度 正弦0.6 余弦0.8 正切0.75 37°*sin(53°)=0.51573630942577 希望能够帮到您！ 53度 正弦0.8 余弦0.6 正切1.33 37度 正弦0.6 余弦0.8 正切0.75

0.79863 用电脑上的计算器，选择科学计算器 角度 先点sin 在输入角度 即可

0.7986。sin是正弦函数，是三角函数的一种。用于计算一个角度的单位圆的正弦值。正弦函数sin(x)的定义是单位圆中一个角度x的y轴坐标。正弦函数的取值范围是从负1到1，其中0度对应于0，90度对应于1，负90度对应于负1等。

附：三角函数值表　　sin0=0,　　sin15=（√6-√2)/4 ,　　sin30=1/2,　　sin45=√2/2,　　sin60=√3/2,　　sin75=(√6+√2)/2 ,　　sin90=1,　　sin105=√2/2*(√3/2+1/2)　　sin120=√3/2　　sin135=√2/2　　sin150=1/2　　sin165=（√6-√2)/4　　sin180=0　　sin270=-1　　sin360=0　　sin1=0.01745240643728351 sin2=0.03489949670250097 sin3=0.05233595624294383　　sin4=0.0697564737441253 sin5=0.08715574274765816 sin6=0.10452846326765346　　sin7=0.12186934340514747 sin8=0.13917310096006544 sin9=0.15643446504023087　　sin10=0.17364817766693033 sin11=0.1908089953765448 sin12=0.20791169081775931　　sin13=0.22495105434386497 sin14=0.24192189559966773 sin15=0.25881904510252074　　sin16=0.27563735581699916 sin17=0.2923717047227367 sin18=0.3090169943749474　　sin19=0.3255681544571567 sin20=0.3420201433256687 sin21=0.35836794954530027　　sin22=0.374606593415912 sin23=0.3907311284892737 sin24=0.40673664307580015　　sin25=0.42261826174069944 sin26=0.4383711467890774 sin27=0.45399049973954675　　sin28=0.4694715627858908 sin29=0.48480962024633706 sin30=0.49999999999999994　　sin31=0.5150380749100542 sin32=0.5299192642332049 sin33=0.544639035015027　　sin34=0.5591929034707468 sin35=0.573576436351046 sin36=0.5877852522924731　　sin37=0.6018150231520483 sin38=0.6156614753256583 sin39=0.6293203910498375　　sin40=0.6427876096865392 sin41=0.6560590289905073 sin42=0.6691306063588582　　sin43=0.6819983600624985 sin44=0.6946583704589972 sin45=0.7071067811865475　　sin46=0.7193398003386511 sin47=0.7313537016191705 sin48=0.7431448254773941　　sin49=0.7547095802227719 sin50=0.766044443118978 sin51=0.7771459614569708　　sin52=0.7880107536067219 sin53=0.7986355100472928 sin54=0.8090169943749474　　sin55=0.8191520442889918 sin56=0.8290375725550417 sin57=0.8386705679454239　　sin58=0.848048096156426 sin59=0.8571673007021122 sin60=0.8660254037844386　　sin61=0.8746197071393957 sin62=0.8829475928589269 sin63=0.8910065241883678　　sin64=0.898794046299167 sin65=0.9063077870366499 sin66=0.9135454576426009　　sin67=0.9205048534524404 sin68=

y轴方向上的合力F合y=F2sin53°=10×0.8N=8N．x轴方向上的合力F合x=F2cos53°+F3-F1=10×0.6+7-5N=8N．所以最终的合力F合＝F合x2+F合y2=82N．故答案为：82N．

0.8 或 4/5

sin37°≈0.60。sin37°等于0.60181502315205，sin37°=3/5。在直角三角形中，∠A（非直角）的对边与斜边的比叫做∠A的正弦，故记作sinA，即sinA=∠A的对边/∠A的斜边。7度角的三角函数值：sin37=3/5；cos37=4/5；tan37=3/4。cot37=4/3；sin53=4/5；cos53=3/5。tan53=4/3；cot53=3/4。cos(α+β)=cosα·cosβ-sinα·sinβ。cos(α-β)=cosα·cosβ+sinα·sinβ。sin（正玄）函数正弦（sine），数学术语，是三角函数的一种，在直角三角形中，任意一锐角∠A的对边与斜边的比叫做∠A的正弦，记作sinA（由英语sine一词简写得来），即sinA=∠A的对边/斜边。三角函数是数学中属于初等函数中的超越函数的一类函数。它们的本质是任意角的集合与一个比值的集合的变量之间的映射。通常的三角函数是在平面直角坐标系中定义的，其定义域为整个实数域。

0.8 或 4/5

Sin53度18分42秒=Sin53度(18+42/60)分=Sin53度18.7分=Sin(53+18.7/60)度=Sin53.31167渡=0.801897317

0.8 或 4/5

sin53度=0.80cos53度=0.60

sin122=sin（180-58）=sin58 sin53=sin(90-37)=cos37 cos58度sin37度+sin122度sin53度 =cos58sin37+sin58cos37 =sin(58+37) =sin95 =sin(90+5) =cos5

cos53=3/5 sin53=4/5cos37=4/5 sin37=3/5

cos53°=3/5 sin53°=4/5 祝您新春愉快！不明白的可以追问，包您满意^.^

sin211°07"53"≈ -0.517002348

cos53=3/5 sin53=4/5cos37=4/5 sin37=3/5

1.15度用30度的半角公式求。tan15=2-√3≈0.2679sin15=[√(2-√3)]/2≈0.2588cos15=[√(2+√3)]/2≈0.96592.37度和53度的话，可以近似成边长为3，4，5的直角三角形，然后用几何方式求。tan37=3/4=0.75sin37=3/5=0.6cos37=4/5=0.8tan53=4/3≈1.3333sin53=4/5=0.8cos53=3/5=0.6

∵AC=5L，BC=3L又∴BC/AC=3/5=0.6=cos53°又∵∠ACB=53副∴此时，△ABC为直角三角形∴此时AB与水平方向成37°角，与竖直方向成53°角∵C点小球水平方向受力平衡∴F1sin53=F2cos53

三角函数是数学中属于初等函数中的超越函数的一类函数。它包含六种基本函数：正弦、余弦、正切、余切、正割、余割。附：普通值表sin1=0.01745240643728351 sin2=0.03489949670250097 sin3=0.05233595624294383 sin4=0.0697564737441253 sin5=0.08715574274765816 sin6=0.10452846326765346 sin7=0.12186934340514747 sin8=0.13917310096006544 sin9=0.15643446504023087 sin10=0.17364817766693033 sin11=0.1908089953765448 sin12=0.20791169081775931 sin13=0.22495105434386497 sin14=0.24192189559966773 sin15=0.25881904510252074 sin16=0.27563735581699916 sin17=0.2923717047227367 sin18=0.3090169943749474 sin19=0.3255681544571567 sin20=0.3420201433256687 sin21=0.35836794954530027 sin22=0.374606593415912 sin23=0.3907311284892737 sin24=0.40673664307580015 sin25=0.42261826174069944 sin26=0.4383711467890774 sin27=0.45399049973954675 sin28=0.4694715627858908 sin29=0.48480962024633706 sin30=0.49999999999999994 sin31=0.5150380749100542 sin32=0.5299192642332049 sin33=0.544639035015027 sin34=0.5591929034707468 sin35=0.573576436351046 sin36=0.5877852522924731 sin37=0.6018150231520483 sin38=0.6156614753256583 sin39=0.6293203910498375 sin40=0.6427876096865392 sin41=0.6560590289905073 sin42=0.6691306063588582 sin43=0.6819983600624985 sin44=0.6946583704589972 sin45=0.7071067811865475 sin46=0.7193398003386511 sin47=0.7313537016191705 sin48=0.7431448254773941 sin49=0.7547095802227719 sin50=0.766044443118978 sin51=0.7771459614569708 sin52=0.7880107536067219 sin53=0.7986355100472928 sin54=0.8090169943749474 sin55=0.8191520442889918 sin56=0.8290375725550417 sin57=0.8386705679454239 sin58=0.848048096156426 sin59=0.8571673007021122 sin60=0.8660254037844386 sin61=0.8746197071393957 sin62=0.8829475928589269 sin63=0.8910065241883678 sin64=0.898794046299167 sin65=0.9063077870366499 sin66=0.9135454576426009 sin67=0.9205048534524404 sin68=0.9271838545667873 sin69=0.9335804264972017 sin70=0.9396926207859083 sin71=0.9455185755993167 sin72=0.9510565162951535 sin73=0.9563047559630354 sin74=0.9612616959383189 sin75=0.9659258262890683 sin76=0.9702957262759965 sin77=0.9743700647852352 sin78=0.9781476007338057 sin79=0.981627183447664 sin80=0.984807753012208 sin81=0.9876883405951378 sin82=0.9902680687415704 sin83=0.992546151641322 sin84=0.9945218953682733 sin85=0.9961946980917455 sin86=0.9975640502598242 sin87=0.9986295347545738 sin88=0.9993908270190958 sin89=0.9998476951563913 sin90=1 cos1=0.9998476951563913 cos2=0.9993908270190958 cos3=0.9986295347545738 cos4=0.9975640502598242 cos5=0.9961946980917455 cos6=0.9945218953682733 cos7=0.992546151641322 cos8=0.9902680687415704 cos9=0.9876883405951378 cos10=0.984807753012208 cos11=0.981627183447664 cos12=0.9781476007338057 cos13=0.9743700647852352 cos14=0.9702957262759965 cos15=0.9659258262890683 cos16=0.9612616959383189 cos17=0.9563047559630355 cos18=0.9510565162951535 cos19=0.9455185755993168 cos20=0.9396926207859084 cos21=0.9335804264972017 cos22=0.9271838545667874 cos23=0.9205048534524404 cos24=0.9135454576426009 cos25=0.9063077870366499 cos26=0.898794046299167 cos27=0.8910065241883679 cos28=0.882947592858927 cos29=0.8746197071393957 cos30=0.8660254037844387 cos31=0.8571673007021123 cos32=0.848048096156426 cos33=0.838670567945424 cos34=0.8290375725550417 cos35=0.8191520442889918 cos36=0.8090169943749474 cos37=0.7986355100472928 cos38=0.7880107536067219 cos39=0.7771459614569709 cos40=0.766044443118978 cos41=0.754709580222772 cos42=0.7431448254773942 cos43=0.7313537016191705 cos44=0.7193398003386512 cos45=0.7071067811865476 cos46=0.6946583704589974 cos47=0.6819983600624985 cos48=0.6691306063588582 cos49=0.6560590289905074 cos50=0.6427876096865394 cos51=0.6293203910498375 cos52=0.6156614753256583 cos53=0.6018150231520484 cos54=0.5877852522924731 cos55=0.5735764363510462 cos56=0.5591929034707468 cos57=0.5446390350150272 cos58=0.5299192642332049 cos59=0.5150380749100544 cos60=0.5000000000000001 cos61=0.4848096202463371 cos62=0.46947156278589086 cos63=0.4539904997395468 cos64=0.43837114678907746 cos65=0.42261826174069944 cos66=0.4067366430758004 cos67=0.3907311284892737 cos68=0.3746065934159122 cos69=0.35836794954530015 cos70=0.3420201433256688 cos71=0.32556815445715675 cos72=0.30901699437494745 cos73=0.29237170472273677 cos74=0.27563735581699916 cos75=0.25881904510252074 cos76=0.24192189559966767 cos77=0.22495105434386514 cos78=0.20791169081775923 cos79=0.19080899537654491 cos80=0.17364817766693041 cos81=0.15643446504023092 cos82=0.13917310096006546 cos83=0.12186934340514749 cos84=0.10452846326765346 cos85=0.08715574274765836 cos86=0.06975647374412523 cos87=0.052335956242943966 cos88=0.03489949670250108 cos89=0.0174524064372836 cos90=0 tan1=0.017455064928217585 tan2=0.03492076949174773 tan3=0.052407779283041196 tan4=0.06992681194351041 tan5=0.08748866352592401 tan6=0.10510423526567646 tan7=0.1227845609029046 tan8=0.14054083470239145 tan9=0.15838444032453627 tan10=0.17632698070846497 tan11=0.19438030913771848 tan12=0.2125565616700221 tan13=0.2308681911255631 tan14=0.24932800284318068 tan15=0.2679491924311227 tan16=0.2867453857588079 tan17=0.30573068145866033 tan18=0.3249196962329063 tan19=0.34432761328966527 tan20=0.36397023426620234 tan21=0.3838640350354158 tan22=0.4040262258351568 tan23=0.4244748162096047 tan24=0.4452286853085361 tan25=0.4663076581549986 tan26=0.4877325885658614 tan27=0.5095254494944288 tan28=0.5317094316614788 tan29=0.554309051452769 tan30=0.5773502691896257 tan31=0.6008606190275604 tan32=0.6248693519093275 tan33=0.6494075931975104 tan34=0.6745085168424265 tan35=0.7002075382097097 tan36=0.7265425280053609 tan37=0.7535540501027942 tan38=0.7812856265067174 tan39=0.8097840331950072 tan40=0.8390996311772799 tan41=0.8692867378162267 tan42=0.9004040442978399 tan43=0.9325150861376618 tan44=0.9656887748070739 tan45=0.9999999999999999 tan46=1.0355303137905693 tan47=1.0723687100246826 tan48=1.1106125148291927 tan49=1.1503684072210092 tan50=1.19175359259421 tan51=1.234897156535051 tan52=1.2799416321930785 tan53=1.3270448216204098 tan54=1.3763819204711733 tan55=1.4281480067421144 tan56=1.4825609685127403 tan57=1.5398649638145827 tan58=1.6003345290410506 tan59=1.6642794823505173 tan60=1.7320508075688767 tan61=1.8040477552714235 tan62=1.8807264653463318 tan63=1.9626105055051503 tan64=2.050303841579296 tan65=2.1445069205095586 tan66=2.246036773904215 tan67=2.355852365823753 tan68=2.4750868534162946 tan69=2.6050890646938023 tan70=2.7474774194546216 tan71=2.904210877675822 tan72=3.0776835371752526 tan73=3.2708526184841404 tan74=3.4874144438409087 tan75=3.7320508075688776 tan76=4.0107809335358455 tan77=4.331475874284153 tan78=4.704630109478456 tan79=5.144554015970307 tan80=5.671281819617707 tan81=6.313751514675041 tan82=7.115369722384207 tan83=8.144346427974593 tan84=9.514364454222587 tan85=11.43005230276132 tan86=14.300666256711942 tan87=19.08113668772816 tan88=28.636253282915515 tan89=57.289961630759144 tan90=(无限)

sin122=sin（90+32）=-sin32=cos58，sin53=cos37，具体正负号可能不对，学了好几年了忘记公式了，思路应该就是这样，希望能帮到你吧，呵呵

公式sinAcosB-cosAsinB=sin(A-B)=sin(53-83)= - 1/2 画坐标图，sin83=sin97 用公式 sin(A)=sin(pai-A)