If \(3\tan A = 4 \quad (0^\circ < A < 90^\circ)\), then the value of \(\sin A\) is \dots
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Whenever:
\[
\tan A = \frac{a}{b}
\]
take:
\[
\text{Perpendicular} = a,\quad \text{Base} = b
\]
then use Pythagoras theorem to find the hypotenuse quickly.