CBSE Class 10 Maths (Standard) 2015 · Paper 30(B) · Question 13
Prove that the angle between two tangents drawn from an external point to a circle is supplementary to the angle subtended by the line segment joining the points of contact at the centre.
Answer
Proved: , so the angle between the tangents is supplementary to the angle the chord of contact subtends at the centre.
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