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| Math Central | Quandaries & Queries |
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Question from bijo, a student: how can i find the tangent point at a circle with origin as center with radius r and the tangent pass through a given point P? I also want to find out the third point of a right angled triangle given other two points? |
Bijo,
The answer comes down to knowing the size of the angle at C in the triangle ABC when C is a point on the circle whose diameter is AB.
Chris
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