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Prove that Sin 2 12 +sin 2 21+sin2 39 +sin 2 48 = 1+sin 2 9+sin 2 18


Prove that


 Sin2 12 +sin221+sin2 39 +sin248 = 1+sin2 9+sin2 18

Grade:

1 Answers

Neha Jain
4 Points
9 years ago

Sorry the exact question is:

instead of sin 2 39 it is sin2 39

Sin2 12 +sin221+sin2 39 +sin248 = 1+sin2 9+sin2 18

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