Evaluate
\frac{60}{7}\approx 8.571428571
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\frac{120}{7}\sin(30)
Multiply 60 and \frac{2}{7} to get \frac{120}{7}.
\frac{120}{7}\times \frac{1}{2}
Get the value of \sin(30) from trigonometric values table.
\frac{60}{7}
Multiply \frac{120}{7} and \frac{1}{2} to get \frac{60}{7}.
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