![\bf \textit{height of an equilateral triangle}\\\\ h=\cfrac{s\sqrt{3}}{2}~~ \begin{cases} s=side's\\ \qquad length\\[-0.5em] \hrulefill\\ h=4\sqrt{15} \end{cases}\implies 4\sqrt{15}=\cfrac{s\sqrt{3}}{2}\implies 8\sqrt{15}=s\sqrt{3} \\\\\\ \cfrac{8\sqrt{15}}{\sqrt{3}}=s\implies \cfrac{8\sqrt{3\cdot 5}}{\sqrt{3}}=s\implies \cfrac{8\underline{\sqrt{3}}\cdot \sqrt{5}}{\underline{\sqrt{3}}}=s\implies 8\sqrt{5}=s](/tpl/images/0499/0422/c82b1.png)
Trigonometry i need to find the perimeter of the triangle
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Mathematics, 04.02.2020 04:02 mariahchaparro08
Trigonometry i need to find the perimeter of the triangle
Answers: 1
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