If cos (α -β) + cos (β - γ) + cos (γ - α) =-3/2 , prove that cos α + cos β + cos γ= sin α + sin &#

If $\cos (α - β) + \cos (β - γ) + \cos (γ - α) = - 3 / 2$ , prove that $\cos α + \cos β + \cos γ = \sin α + \sin &#Matching exerciseMatch the items on the right to the items on the left.CheckOKSTEP 1STEP 2STEP 3STEP 4STEP 5$