acos3A+3acosAsin2A=m andasin3A+3acos2AsinA=n P T (m+n)2/3+(m-n)2/3=2a2/3 - Maths - Introduction to Trigonometry

Question

acos3A+3acosAsin2A=m
andasin3A+3acos2AsinA=n P T
(m+n)2/3+(m-n)2/3=2a2/3

Brijendra P. · Accepted Answer

Here is the link for the answer to your query

https://www meritnation com/discuss/question/2822647/1/

acos3A+3acosAsin2A=m andasin3A+3acos2AsinA=n P.T (m+n)2/3+(m-n)2/3=2a2/3