Question

Given cosx+cosy+cosz=3sqrt(3)/2 and sinx+siny+sinz=3/2 then show that x= pi/6 +2k(pi) , y=pi/6 + 2l(pi) , z=pi/6 + 2m(pi) , for some k,l,m belongs to Z.

Answer 1

@shubhamsrg

Answer 2

hehe thanks for the tag sire. I do remember this question.
@joseph91 square both eqns and add em, see if it helps ?