# Translations:Faq/Draw/105/2/en

$\displaystyle{ h=\mathit{a.}\sin \left(\frac{\Pi }{3}\right)=\mathit{a.}\sin \left(60\circ \right)=\mathit{a.}\frac{\sqrt{3}}{2}\approx a\times \mathrm{0.866} }$ with a representing the length of any edge of the triangle.