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4sinthetacostheta =1+2costheta -2sinthet...

`4sinthetacostheta =1+2costheta -2sintheta (0 lt theta lt pi)`

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`pi/6, (2pi)/3, (5pi)/6`
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Let P = [theta : sintheta – costheta = sqrt2 costheta) andQ= {theta : sintheta + costheta = 12 sintheta} be two sets. Then: