If and , then…

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

Problem

If cos⁡x=−1213\cos x=-\dfrac{12}{13} and 180∘<x<270∘180^{\circ}<x<270^{\circ}, then tan⁡x\tan x equals (a) 513\dfrac{5}{13} (b) −512-\dfrac{5}{12} (c) 512\dfrac{5}{12} (d) 125\dfrac{12}{5}

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