1.csc−1(cosx)\csc^{-1}(\cos x)csc−1(cosx) exists ifa.x∈[−1,1]x \in [-1, 1]x∈[−1,1]b.x∈Rx \in \mathbb{R}x∈Rc.xxx is an odd multiple of π/2\pi/2π/2d.xxx is a multiple of π\piπLogin to continueOnly logged in users canattempt or see the solution.
