Q. 2 A4.0( 4 Votes )

# Prove that :

sin 38° + sin 22°= sin 82°

Answer :

Take L.H.S:

sin 38° + sin 22°

= 2 sin 30° cos 8°

= cos 8°

= cos (90° - 82°)

{cos (90° - A) = sin A}

= sin 82°

= R.H.S

Hence Proved

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