三角函式表值對照表

常用三角函數值對照表

sin0=sin0°=0

cos0=cos0°=1

tan0=tan0°=0sin15=0.650

sin15°=0.259

cos15=-0.759cos15°=0.966

tan15=-0.855tan15°=0.268

sin30°=1/2

cos30°=0.866

tan30°=0.577

sin45°=0.707

cos45°=0.707

tan45=1.620tan45°=1

sin60=-0.305sin60°=0.866

cos60=-0.952cos60°=1/2

tan60=0.320tan60°=1.732

sin75=-0.388sin75°=0.966

cos75=0.922cos75°=0.259

tan75=-0.421tan75°=sin75°/cos75°=3.732

sin90=0.894sin90°=cos0°=1

cos90=-0.448cos90°=sin0°=0

tan90=-1.995tan90°不存在

sin105=-0.971sin105°=cos15°

cos105=-0.241cos105°=-sin15°

tan105=4.028tan105°=-cot15°

sin120=0.581sin120°=cos30°

cos120=0.814cos120°=-sin30°

tan120=0.713tan120°=-tan60°

sin135=0.088sin135°=sin45°

cos135=-0.996cos135°=-cos45°

tan135=-0.0887tan135°=-tan45°

sin150=-0.7149sin150°=sin30°

cos150=-0.699cos150°=-cos30°

tan150=-1.022tan150°=-tan30°

sin165=0.998sin165°=sin15°

cos165=-0.066cos165°=-cos15°

tan165=-15.041tan165°=-tan15°

sin180=-0.801sin180°=sin0°=0

cos180=-0.598cos180°=-cos0°=-1

tan180=1.339tan180°=0

sin195=0.219sin195°=-sin15°

cos195=0.976cos195°=-cos15°

tan195=0.225tan195°=tan15°

sin360=0.959sin360°=sin0°=0

cos360=-0.284cos360°=cos0°=1

tan360=-3.380tan360°=tan0°=0

特殊角三角函式值

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

cos1=0.9998476951563913

cos2=0.9993908270190958

cos3=0.9986295347545738

cos4=0.9975640502598242

cos5=0.9961946980917455

cos6=0.9945218953682733

cos7=0.992546151641322