CBSE Class 10 Maths (Standard) 2020 · Paper 30/3/1 · Question 31(a)
Prove that a tangent to a circle is perpendicular to the radius through the point of contact.
Answer
Since every point of the tangent other than P is outside the circle, is the shortest distance from to the tangent, and the shortest distance is along the perpendicular. Hence . Proved.
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