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6 tan 2 x – 2 cos 2 x = cos2x if cos2x = ?


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


Grade:12

2 Answers

Neer Varshney
76 Points
13 years ago

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

 

Nirabhra Agrawal
33 Points
13 years ago

Its answer is cos2x = 1/2

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