# Solve the question given in the figure for me . I am too much confused will solving it. Please...

Arun
25757 Points
5 years ago
Dear student

cos^-1 x + cos^-1 y = $\pi$ - cos^-1 z
Cos^-1 x + cos^-1 y = - cos^-1 z
Now put the formula of cos^-1 a + cos^-1 b
Cos^-1 [x y - $\sqrt$(1- x²) $\sqrt$(1-y²) ] = - cos^-1 z
Now