Question

What’s the value of x?

Answer 1

$\tan(30) = \frac{x}{15} \\ \frac{1}{ \sqrt{3} } = \frac{x}{15 } \\ x = \frac{15}{ \sqrt{3} } = \frac{5 \times 3}{ \sqrt{3} } = 5 \sqrt{3}$