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sinx+sin 2 x=2 find,cos 4 x+cos 2 x

                                                                      sinx+sin2x=2


                                                       find,cos4x+cos2x

Grade:11

1 Answers

Jayesh Arun Kadam
34 Points
10 years ago

 sinx+sin2x=2

is only possible when x is element of (4n+1)∏/2 (n E R)

At all this points cosx =0

cos4x+cos2x=0

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