3 A is equal to : - Vidyadip

MCQ

$\sin 3 A$ is equal to :

✓
$3 \sin A-4 \sin ^3 A$
B
$3 \sin A+4 \sin ^3 A$
C
$4 \sin ^3 A-3 \cos A$
D
None of these

✓

Answer

Correct option: A.

$3 \sin A-4 \sin ^3 A$

(A)

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