技术资料>三角函数表
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📐 三角函数精密查询表
正弦 · 余弦 · 正切 · 余切 · 正割 · 余割 | 动态计算，即时查询
📏 输入角度值
📐 角度单位
° 度数
rad 弧度
✨ 快速预设
0°
30°
45°
60°
90°
180°
🔍 计算 & 查询
⚙️ 精度控制 (小数位数)
特殊值自动符号优化
角度 θ (当前单位)
sin(θ) 正弦
cos(θ) 余弦
tan(θ) 正切
cot(θ) 余切
sec(θ) 正割
csc(θ) 余割
👉 输入角度并点击查询，生成详细三角函数值
💡 说明：正切/正割在角度为90°、270°等处无定义，显示 “∞ / 未定义”。
余切/余割在0°、180°等处同样无定义。基于标准数学库计算，支持度/弧度双模式。
定义
三角函数与边的关系 (Trigonometric Relationships)
sin(A) = a / h
对边 / 斜边
准备开始
Ready to start
部分常用参数摘要
1，正弦函数表 sin
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
2，余弦函数表 cos
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
3，正切函数表 tan
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)
4，余切函数 cot
cot89=0.017455064928217585 cot88=0.03492076949174773 cot87=0.052407779283041196
cot86=0.06992681194351041 cot85=0.08748866352592401 cot84=0.10510423526567646
cot83=0.1227845609029046 cot83=0.14054083470239145 cot81=0.15838444032453627
cot80=0.17632698070846497 cot79=0.19438030913771848 cot78=0.2125565616700221
cot77=0.2308681911255631 cot76=0.24932800284318068 cot75=0.2679491924311227
cot74=0.2867453857588079 cot73=0.30573068145866033 cot72=0.3249196962329063
cot71=0.34432761328966527 cot70=0.36397023426620234 cot69=0.3838640350354158
cot68=0.4040262258351568 cot67=0.4244748162096047 cot66=0.4452286853085361
cot65=0.4663076581549986 cot64=0.4877325885658614 cot63=0.5095254494944288
cot62=0.5317094316614788 cot61=0.554309051452769 cot60=0.5773502691896257
cot59=0.6008606190275604 cot58=0.6248693519093275 cot57=0.6494075931975104
cot56=0.6745085168424265 cot55=0.7002075382097097 cot54=0.7265425280053609
cot53=0.7535540501027942 cot52=0.7812856265067174 cot51=0.8097840331950072
cot50=0.8390996311772799 cot49=0.8692867378162267 cot48=0.9004040442978399
cot47=0.9325150861376618 cot46=0.9656887748070739 cot45=0.9999999999999999
cot44=1.0355303137905693 cot43=1.0723687100246826 cot42=1.1106125148291927
cot41=1.1503684072210092 cot40=1.19175359259421 cot39=1.234897156535051
cot38=1.2799416321930785 cot37=1.3270448216204098 cot36=1.3763819204711733
cot35=1.4281480067421144 cot34=1.4825609685127403 cot33=1.5398649638145827
cot32=1.6003345290410506 cot31=1.6642794823505173 cot30=1.7320508075688767
cot29=1.8040477552714235 cot28=1.8807264653463318 cot27=1.9626105055051503
cot26=2.050303841579296 cot25=2.1445069205095586 cot24=2.246036773904215
cot23=2.355852365823753 cot22=2.4750868534162946 cot21=2.6050890646938023
cot20=2.7474774194546216 cot19=2.904210877675822 cot18=3.0776835371752526
cot17=3.2708526184841404 cot16=3.4874144438409087 cot15=3.7320508075688776
cot14=4.0107809335358455 cot13=4.331475874284153 cot12=4.704630109478456
cot11=5.144554015970307 cot10=5.671281819617707 cot9=6.313751514675041
cot8=7.115369722384207 cot7=8.144346427974593 cot6=9.514364454222587
cot5=11.43005230276132 cot4=14.300666256711942 cot3=19.08113668772816
cot228.636253282915515 cot1=57.289961630759144
cot0=(无限)
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