Simson's line

Autor:Terry Tam

P is a point on a circle, and ABC is an inscribed triangle. Prove that the feets of altitudes of point P on 3 sides of the triangle are collinear. (Hint: Consider PABC as a cyclic quadrilateral)

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Tangent in Cartesian and Polar Coordinates
Graphing a Circle in Polar Coordinates
Sine in Cartesian and Polar Coordinates

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