Math, asked by neetuchaurasia24, 2 months ago

cos2acos2b + sin^2(a+b) - sin^2(a+b) = cos (2a+2b)​

Answers

Answered by krupakharchan
0

Step-by-step explanation:

sin27

sin63

−cos63

cos27

=sin(90−63)

sin63

−cos63

cos(90−63)

cos63

sin63

−cos63

sin63

=0

Similar questions