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1+cosx (2sinx-cosx)=sin^2x

keerthi priya , 10 Years ago
Grade 11
anser 2 Answers
Abhi99

Last Activity: 10 Years ago

what is rhs..? if it is (sinx)^2 then ans is x=n(pi)/2 ; n is an integer.
& if on rhs it is sin(2x) then ans is x=n(pi) ;n is an integer.

Jitender Singh

Last Activity: 10 Years ago

1 + cosx(2sinx – cosx) = sin2x
1 + 2sinx.cosx – cos2x = sin2x
1 + 2sinx.cosx = sin2x + cos2x
1 + 2sinx.cosx = 1
sin2x = 0
2x = n(pi)
x = n(pi) / 2

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