1.

The most general value of \[\theta \]satisfying the equations \[\sin \theta =\sin \alpha \]and \[\cos \theta =\cos \alpha \]is [IIT 1971; Karnataka CET 1993; DCE 1999]

A. \[2n\pi +\alpha \]
B. \[2n\pi -\alpha \]
C. \[n\pi +\alpha \]
D. \[n\pi -\alpha \]
Answer» B. \[2n\pi -\alpha \]


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