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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