Can you also show the steps?

We can also do this by rationalizing the denominator....multiplying the numerator and denominator by the square root of 12....and we have

[ 3 / sqrt(12) ] * [ sqrt(12) / sqrt(12) ] =

3sqrt(12) / 12  =

sqrt(12) / 4  =  

sqrt(4 * 3) / 4 = 

2sqrt(3) / 4  =  

sqrt(3) / 2

3 over the square root 12

3/sqrt(12)

3/3.464...... =.8660254.......etc.

Like so?

\(\frac{3}{\sqrt{12}}\rightarrow\frac{3}{\sqrt{4\times3}}\rightarrow\frac{3}{2\sqrt{3}}\rightarrow\frac{\sqrt{3}\times\sqrt{3}}{2\sqrt{3}}\rightarrow\frac{\sqrt{3}}{2}\)