sin(0°)=0.000000,cos(0°)=1.000000,tan(0°)=0.000000 sin(1°)=0.017452,cos(1°)=0.999848,tan(1°)=0.017455 sin(2°)=0.034899,cos(2°)=0.999391,tan(2°)=0.034921 sin(3°)=0.052336,cos(3°)=0.998630,tan(3°)=0.052408 sin(4°)=0.069756,cos(4°)=0.997564,tan(4°)=0.069927 sin(...
≈0.9659258263 sin90°=sin =1 sin180°=sin =0 sin270°=sin =-1 sin360°=sin =0 cos cos0°=cos0=1 cos15°=cos = ≈0.9659258263 cos22.5°=cos = ≈0.9238795325 cos30°=cos = ≈0.8660254038 cos45°=cos = ≈0.7071067812 cos60°=cos = =0.5 cos67.5°=cos = ≈0....
0°: 0; 30°: 0.5; 60°: 0.866; 90°: 1; 120°: 0.866; 150°: 0.5; 180°: 0; 210°: -0.5; 240°: -0.866; 270°: -1; 300°: -0.866; 330°: -0.5 cos:每30°余弦值相同,即 0°: 1; 30°: 0.866; 60°: 0.5; 90°: 0; 120°: -0.5; 150°: -0.866; 180°: -1...
首先,我们先理解基础概念,如下: SinA= CsA= TanA= CtA= 还有一点很重要, 0 < sinA < 1 0 < sinA <1 根据三角函数的定义,我们还可以; 三角函数特殊角值表: 角度|函数|030|45|60|90|120|135|150|180|270|360| 角a的弧度|0π/6|π/4|π/3|π/2|2π/3|3π/4|5π/6|π|3π/2|2π| ...
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。
角度 值 tan0° 0 tan15° 2-√3 tan30° √3/3 tan45 1 tan60° √3 tan75° 2+√3 tan90° 不存在 tan120° -√3 tan135° -1 tan150° -√3/3 tan180° 0 tan270° 不存在 tan360° 02三角函数的正切 在Rt△ABC(直角三角形)中,∠C=90°,AB是∠C的对边c,BC是∠A的对边a,AC...
0-360度三角函数值 角α 0° 30° 45° 60° 90° 120° 135° 150° 180° 270° 360° 弧度制 0 π/6 π/4 π/3 π/2 2π/3 3π/4 5π/6 π 3π/2 2π sinα 0 ½ √2/2 √3/2 1 √3/2 √2/2 ½ 0 -1 0 cosα 1 √3/2 √2/2 ½ 0 -0.5 -√2/2 -√...
tan180=1.339;tan180°=0 sin195=0.219;sin195°=-sin15° cos195=0.976;cos195°=-cos15° tan195=0.225;tan195°=tan15° sin360=0.959;sin360°=sin0°=0 cos360=-0.284;cos360°=cos0°=1 tan360=-3.380;tan360°=tan0°=0 cos72度=[(√5)-1]/4(利用黄金等腰三角形可得出) ...
余弦值表对应角度对照表 0° 到 180° cos(0°) = 1 cos(1°) = 0.999848 cos(2°) = 0.999391 cos(3°) = 0.99863 cos(4°) = 0.997564 cos(5°) = 0.996195 cos(6°) = 0.994522 cos(7°) = 0.992546 cos(8°) = 0.990268 cos(9°) = 0.987688 ...