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Nirabhra Agrawal Grade: 12
        


6 tan2 x – 2 cos2 x  =  cos2x  if  cos2x  = ?


6 years ago

Answers : (2)

Neer Varshney
76 Points
										

How can you ask the value of cos2x as it is always= cos^(2)x - sin^(2)x??


 

6 years ago
Nirabhra Agrawal
33 Points
										

Its answer is cos2x = 1/2

6 years ago
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