If $sin A =\frac{1}{2}$ , then find the value of $sin 3A$.
Given :
The given is $sin A =\frac{1}{2}$.
To find :
We have to find the value of $sin 3A$.
Solution :
$sin A =\frac{1}{2}$
We know that $sin 30° = \frac{1}{2}$
$sin A = sin 30°$
$A =30°$
So, $sin 3A = sin 3(30°) = sin 90° = 1$
Therefore, the value of sin 3A is 1.
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