余弦计算器
余弦表达式计算器
表达式与 cos(角度|弧度):
逆余弦计算器
余弦表
x
(deg) |
x
(rad) |
cos x |
---|---|---|
180° | π | -1 |
150° | 5π/6 | -√3/2 |
135° | 3π/4 | -√2/2 |
120° | 2π/3 | -1/2 |
90° | π/2 | 0 |
60° | π/3 | 1/2 |
45° | π/4 | √2/2 |
30° | π/6 | √3/2 |
0° | 0 | 1 |