What is the value of ${\sin }^{-1}\frac{4}{5}+{\sec }^{-1}\frac{5}{4}-\frac{\pi }{2}?$

Important Questions on Inverse Trigonometric Functions

EASY

NDA & NA EE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR MATHEMATICS>Chapter 14 - Inverse Trigonometric Functions>NDA & NA EE 2019 Paper 1 Mathematics>Q 3

If ${\sin }^{-1}\frac{2p}{1+p^2}-{\cos }^{-1}\frac{1-q^2}{1+q^2}$$={\tan }^{-1}\frac{2x}{1-x^2},$ then what is $x$ equal to $?$