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Grade: 

                        
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
8 years ago

Answers : (1)

Neha Jain
4 Points 
							
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
8 years ago
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