

MCQOPTIONS
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1. |
If \[\sin \theta +\sin 2\theta +\sin 3\theta =\sin \alpha \]and \[\cos \theta +\cos 2\theta +\cos 3\theta =\cos \alpha \], then q is equal to [AMU 2001] |
A. | \[\alpha /2\] |
B. | \[\alpha \] |
C. | \[2\alpha \] |
D. | \[\alpha /6\] |
Answer» B. \[\alpha \] | |