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find in product of sines and cosines:- sin2a + cos4a

find in product of sines and cosines:- sin2a + cos4a

Grade:11

1 Answers

Vikas TU
14149 Points
3 years ago
Dear Student,
Expandding the sine and cosine termss we get,
sin2a + cos4a = 2.sina.cosa + 1 – 2sin22a
                        = 2.sina.cosa + 1 – 2(2.sina.cosa)2
                        = 2.sina.cosa + 1 – 8.sin2a.cos2a
                        
Cheers!!
Regards,
Vikas (B. Tech. 4th year
Thapar University)

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