The graphs of the polynomial $x^2-1$ and $\cos x$ intersect

Important Questions on Trigonometric Ratios and Identities

HARD

WBJEE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR MATHEMATICS>Chapter 5 - Trigonometric Ratios and Identities>WBJEE 2019>Q 3

If $e^{\sin x}-e^{-\sin x}-4=0,$ then the number of real values of $x$ is