sin20π⼀3的三角函数值?

2024-07-10 22:10:32
推荐回答(2个)
回答(1):

sin(20π/3) = √3/2。
将角度转化为弧度。20°=20π/180=π/9,再将π/9转化为不大于π的角度:π/9=π-8π/9,因此:sin(20π/3) = sin(2π/3 + 6π) = sin(2π/3) = √3/2
(根据三樱亮明脊告角函数的基本性质,sin(2π/3) = sin(π-2π/3) = sin(π/键迟3) = √3/2)。

回答(2):

sin(6Π+2/3Π)=sin2/3Π=sin120°= sin(180°- 60°)=sin60°= √3/2