Question

If cos^-1x + cos^-1y + cos^-1z=pie prove that
x^2+y^2+z^2+2xyz=1
​

Answer 1

cos-1x + cos-1y + cos-1z = pi. prove that x2 + y2 + z2 +2xyz = 1. Share with your friends. 26 Follow17. EXPERT ANSWER. > Ajanta, Meritnation ...