View Solution Ifcosα+cosβ+cosγ=sinα+sinβ+sinγ=0, thencos3α+cos3β+cos3γis equal to View Solution Free Ncert Solutions English Medium NCERT Solutions NCERT Solutions for Class 12 English Medium NCERT Solutions for Class 11 English Medium ...
If "cos"^(-1)alpha+"cos"^(-1)beta+"cos"^(-1)gamma=3pi, then find alpha(beta+gamma)+beta(gamma+alpha)+gamma(alpha+beta).