Given
- a circumference of center A and radius AD
- point P on the X axis with A <= P <= D
- 0 <= angle_alpha <= 90
- C another point on the circumference
How can it be proved that the distance between P and arc CD is always less or equal to the radius?
2026-05-06 01:25:51.1778030751
Prove distance between a point and an arc is less than the radius
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