1.The value of cos(2cos−1x+sin−1x)\cos (2 \cos^{-1} x + \sin^{-1} x)cos(2cos−1x+sin−1x) at x=15x = \frac{1}{5}x=51 isa.−265-\frac{2\sqrt{6}}{5}−526b.−26-2\sqrt{6}−26c.−65-\frac{\sqrt{6}}{5}−56d.None of theseLogin to continueOnly logged in users canattempt or see the solution.
