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Please solve this question and tell me and explain also.

Please solve this question and tell me and explain also. 

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Grade:12th pass

1 Answers

Arun
25750 Points
5 years ago
Dear student
 
we can write it as
 
1 – cos4A = (1 – cos2A) (1 + cos2A)
 
 = sin2A (1 + cos2A)
 
hope it helps

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