EASY
12th Uttar Pradesh Board
IMPORTANT
Earn 100

Prove that cos-1-x=π-cos-1x, x-1, 1.

Important Questions on Inverse Trigonometric Functions

MEDIUM
12th Uttar Pradesh Board
IMPORTANT
Prove that 2tan-112+tan-117=tan-13117.
EASY
12th Uttar Pradesh Board
IMPORTANT
Find the principal value of sin-1sin7π4.
HARD
12th Uttar Pradesh Board
IMPORTANT
If cos-1xa+cos-1yb=θ, then prove that x2a2-2xyabcosθ+y2b2=sin2θ.
HARD
12th Uttar Pradesh Board
IMPORTANT
Solve the equation sec-1xa-sec-1xb=sec-1b-sec-1a.