基本公式:
\(180° = \pi\) 弧度
\(1° = \frac{\pi}{180}\) 弧度
\(1\) 弧度 \(= \frac{180°}{\pi}\)
常用特殊角:
• \(30° = \frac{\pi}{6}\)
• \(45° = \frac{\pi}{4}\)
• \(60° = \frac{\pi}{3}\)
• \(90° = \frac{\pi}{2}\)
• \(180° = \pi\)
• \(270° = \frac{3\pi}{2}\)
• \(360° = 2\pi\)
1. 角度转弧度:乘以 \(\frac{\pi}{180}\)
2. 弧度转角度:乘以 \(\frac{180}{\pi}\)
3. 记住特殊角的对应关系