1度=π/180弧度( ≈0.017453弧度 )
一个圆是360度,2π弧度
反过来,弧度化成度怎么算?
因为 π弧度=180°
所以 1弧度=180°/π (≈57.3°)
因此,可得到 把弧度化成度的公式:
度=弧度×180°/π
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