Evaluate
30\sqrt{3}\approx 51.961524227
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120\times \frac{1}{2}\cos(30)
Multiply 10 and 12 to get 120.
60\cos(30)
Multiply 120 and \frac{1}{2} to get 60.
60\times \frac{\sqrt{3}}{2}
Get the value of \cos(30) from trigonometric values table.
30\sqrt{3}
Cancel out 2, the greatest common factor in 60 and 2.
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