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Mathematics 18 Online
OpenStudy (anonymous):

write the expressionn sin2x+cos2x as one involving only sinx and cosx

OpenStudy (anonymous):

sin2x=2sinx * cosx cos2x=1 - 2sin^2(x) add both of them to get the answer. hope that helps

OpenStudy (anonymous):

fan me ...if answer is correct..thanx

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