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If x= 2sin2a and y= 2cos2a+1 ,then find the value of x+y |
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Answer» Given, x=2sin 2 θ,y=2cos 2 θ+1 To find: (x+y) x+y=2sin 2 θ+2cos 2 θ+1 =2(sin 2 θ+cos 2 θ)+1 .....(As sin 2 θ+cos 2 θ=1) =2+1 =3 |
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