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If sin theta+sqrt(3)costheta=6y-y^2-11 ...

If `sin theta+sqrt(3)costheta=6y-y^2-11 ,theta in [0, 4pi], y in R` holds for

A

sin 2x=1

B

sin 2x=1

C

cos =`1/2`

D

`cos 2x=-1/2`

Text Solution

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The correct Answer is:
b,d
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