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Let `P={theta:sintheta-costheta=sqrt(2)costheta}"and"Q={theta:sintheta+costheta=sqrt(2)sintheta}` be two sets.then

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Let `P={theta:sintheta-costheta=sqrt(2)costheta}"and"Q={theta:sintheta+costheta=sqrt(2)sintheta}` be two sets.then
A. `PsubQ` and `Q-PnecancelO`
B. `QcancelsubP`
C. `PcancelsubQ`
D. `P=Q`
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Correct Answer - D
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