# Chapter 13, Trigonometric Ratios and Functions - 13.1 Use Trigonometry with Right Triangles - 13.1 Exercises - Skill Practice - Page 856: 19

See below.

#### Work Step by Step

$\tan{30^\circ}=\frac{x}{12}$, thus $x=12\tan{30^\circ}=4\sqrt{3}$ $\cos{30^\circ}=\frac{12}{y}$, thus $y=\frac{12}{\cos{30^\circ}}=8\sqrt3$

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