, then is equal…

MATHEMATICS · Single correct · AP · AP Precalculus · Trigonometric and Polar Functions · Trigonometric and Polar Functions

Problem

tan⁡−12+tan⁡−13=csc⁡−1x\tan^{-1}2 + \tan^{-1}3 = \csc^{-1}x, then xx is equal to: (a) 4 (b) 2\sqrt{2} (c) −2-\sqrt{2} (d) none of these

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