In a are in H.P.

MATHEMATICS · Single correct · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions

Problem

In a ΔABC\Delta ABC tan⁡A2, tan⁡B2, tan⁡C2\tan\frac{A}{2},\ \tan\frac{B}{2},\ \tan\frac{C}{2} are in H.P., then the value of cot⁡A2cot⁡C2\cot\frac{A}{2}\cot\frac{C}{2} is: (a) 3 (b) 2 (c) 1 (d) 3\sqrt{3}

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