"If : `acos^3theta+3acosthetasin^2theta=m ,asin^3theta+3acos^2thetasintheta=n ,`  Prove that :
Channel: Doubtnut
Date: 2020-07-05

"If : `acos^3theta+3acosthetasin^2theta=m ,asin^3theta+3acos^2thetasintheta=n ,`  Prove that : `(m+n)^(2/3)+(m-n)^(2/3)=2a^(2//3)`"