Question

Here is another one that I'm stuck on

Answer 1

Method 1.

Use the triangle /a picture/

`(m\sqrt3)/(2)5\sqrt3\ \ \ \ |\cdot2\\\\m\sqrt3=10\sqrt3\ \ \ \ |:\sqrt3\\\\m=10`

Method 2.

Use the trigonemteric function:

`\cos30^o=(5\sqrt3)/(m)\ \ \ \ /\cos30^o=(\sqrt3)/(2)/\\\\(\sqrt3)/(2)=(5\sqrt3)/(m)\ \ \ |cross\ multiply\\\\m\sqrt3=2\cdot5\sqrt3\ \ \ \ |:\sqrt3\\\\m=10`