弧度与角度对照表
\begin{align}
\pi &= 3.1415926535897...\\
\\
1\, rad &= \frac {180^{\circ}}{\pi} \approx 57.2957795131^{\circ}\\
\\
\alpha^{\circ} &= \alpha^{rad} \times \frac {180^{\circ}}{\pi}\\
\\
\alpha^{rad} &= \alpha^{\circ} \times \frac {\pi}{180^{\circ}}
\end{align}
角度 (°)
弧度 (π 形式)
弧度 (小数)
0°00
30°π/60.5235987756
45°π/40.7853981634
60°π/31.0471975512
90°π/21.5707963268
120°2π/32.0943951024
135°3π/42.3561944902
150°5π/62.6179938780
180°π3.1415926536
210°7π/63.6651914292
225°5π/43.9269908170
240°4π/34.1887902048
270°3π/24.7123889804
300°5π/35.2359877560
315°7π/45.4977871438
330°11π/65.7595865316
360°2π6.2831853072