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Let P = {theta: sin theta- cos theta= sq...

Let `P = {theta: sin theta- cos theta= sqrt2 cos theta}` and `Q= {theta: sin theta+ cos theta= sqrt2 sin theta}` be two sets. Then :

A

`P sub Q` and `Q-P ne phi`

B

`Q cancel sub P`

C

`P cancel sub Q`

D

P=Q.

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