Simply by rationalising the denominator $\displaystyle \frac {\sqrt 3} {\sqrt 6}$ thanks!
Follow Math Help Forum on Facebook and Google+
Originally Posted by waven Simply by rationalising the denominator $\displaystyle \frac {\sqrt 3} {\sqrt 6}$ thanks! multiply it by $\displaystyle \frac{\sqrt{6}}{\sqrt{6}}$
Originally Posted by mathaddict multiply it by $\displaystyle \frac{\sqrt{6}}{\sqrt{6}}$ $\displaystyle \frac {\sqrt 18} 6$ what do i do next? btw the answer is $\displaystyle \frac {\sqrt 2} {2}$
Originally Posted by waven $\displaystyle \frac {\sqrt 18} 6$ what do i do next? btw the answer is $\displaystyle \frac {\sqrt 2} {2}$ Notice that $\displaystyle \sqrt{18} = \sqrt{9 \times 2} = \sqrt{9} \times \sqrt{2} = 3\sqrt{2}$. So $\displaystyle \frac{\sqrt{18}}{6} = \frac{3\sqrt{2}}{6} = \frac{\sqrt{2}}{2}$.
View Tag Cloud