A) \[\sin 2\alpha \]
B) \[\cos 2\alpha \]
C) \[2\sin 2\alpha \]
D) \[2\cos 2\alpha \]
Correct Answer: A
Solution :
\[\Delta =\frac{1}{2}(2\sin \alpha .2\cos \alpha )=\sin 2\alpha \]You need to login to perform this action.
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