Question

sin 65 + cos 25 equal 2 cos 25 and proof it​

Answer 1

To prove :-

sin 65° + cos 25° = 2 cos 25°

Taking LHS :-

= cos (90° - 65°) + cos 25°

= cos 25° + cos 25°

= 2 cos 25°

= RHS

$\blue{\sf{hence}} \: \purple{ \sf{proved}} \: \red{ \sf{!}}$