Question : If $\sin A = \frac{4}{5}$, then what is the value of $\sin^2 A$?
Option 1: $\frac{26}{25}$
Option 2: $\frac{36}{25}$
Option 3: $\frac{48}{25}$
Option 4: $\frac{16}{25}$
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Correct Answer: $\frac{16}{25}$
Solution :
$\sin A = \frac{4}{5}$
Squaring both sides,
⇒ $\sin^2 A = \frac{16}{25}$
Hence, the correct answer is $\frac{16}{25}$.
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