Show that :- (cos3Q - sin3Q / cosQ + sinQ) + (cos3Q - sin3Q / cosQ - sinQ) = 2 - Maths - Introduction to Trigonometry

Question

Show that :-
(cos3Q - sin3Q / cosQ + sinQ) +
(cos3Q - sin3Q / cosQ - sinQ) = 2

Abhishek Kr. Jha · Accepted Answer

Please follow the link given below:
https://www meritnation
com/ask-answer/question/prove-thatcos3a-sin3a-cosa-sina-cos3a-sin3a-cosa-sin/introduction-to-trigonometry/1195405