Let PQ and RS be tangents at the extremities of the diameter PR of a circle of radius r …

Mathematics · JEE Advanced · NTA Exams — Co-ordinate Geometry

1. \(\sqrt{\text { Q. } \mathbf{R}}\)
2. \(\frac{P+B}{2}\)
3. \(\frac{2 \mathbb{Q} \cdot R}{Q+R}\)
4. \(\sqrt{\frac{\mathbf{P}^{2}+\mathbf{R}^{2}}{2}}\)

Answer

(A) Q. R

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