Not greatly complicated really; just remember that that the cone's inner and outer angles are specified in radians not degrees.
并不是很复杂。只要记好锥形的内外角是用弧度而不是角度表示的。
Not greatly complicated really; just remember that that the cone's inner and outer angles are specified in radians not degrees.
并不是很复杂。只要记好锥形的内外角是用弧度而不是角度表示的。
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