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sinx+sin2x=2

find,cos4x+cos2x

vishwa sharma , 14 Years ago
Grade 11
anser 1 Answers
Jayesh Arun Kadam

Last Activity: 14 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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