Evaluate
\frac{\sqrt{3}}{2}\approx 0.866025404
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\frac{18\sqrt{3}}{12\left(\sqrt{3}\right)^{2}}
Rationalize the denominator of \frac{18}{12\sqrt{3}} by multiplying numerator and denominator by \sqrt{3}.
\frac{18\sqrt{3}}{12\times 3}
The square of \sqrt{3} is 3.
\frac{\sqrt{3}}{2}
Cancel out 3\times 6 in both numerator and denominator.
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