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JEE MATHEMATICS MCQ: CIRCLES

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The chord of contact of tangents from a point PP to a circle passes through QQ. If l1l_1 and l2l_2 are the lengths of the tangents from PP and QQ to the circle, then PQP Q is equal to
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Correct option: C
l12+l22\sqrt{l_1^2+l_2^2}
Option C (l12+l22\sqrt{l_1^2+l_2^2}) is correct because it represents the distance PQ, derived using the chord of contact and the lengths of tangents from P and Q.

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