, is equal…

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

Problem

tan⁡(π4+12cos⁡−1x)+tan⁡(π4−12cos⁡−1x)\tan\left(\frac{\pi}{4} + \frac{1}{2} \cos^{-1} x\right) + \tan\left(\frac{\pi}{4} - \frac{1}{2} \cos^{-1} x\right), x≠0x \neq 0 is equal to (a) xx (b) 2x2x (c) 2x\frac{2}{x} (d) x2\frac{x}{2}

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