Question

sin² 48º + sin²42º = 1 without using trigonometric table prove that​

Answer 1

Step-by-step explanation:

Given :--

sin^2 48° + sin^2 42°

●Solution●

=》 Sin^2 ( 90° - 42°) + sin^42°

=》 cos^2 42° + sin^2 42°

=》 1 . { As, Sin^2 A + cos^A = 1 }