Question

If sinA =1/3, then sin 3A is equal to

Answer 1

Answer:

23/27

Step-by-step explanation:

Sin3A = 3sinA-4sin^3A

$3*\frac{1}{3} - 4*(\frac{1}{3})^{3} \\\\1 - \frac{4}{27} \\\\\frac{27-4}{27} \\\\\frac{23}{27}$

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