# Chapter 5 - Trigonometric Identities - Section 5.6 Half-Angle Identities - 5.6 Exercises - Page 244: 80

Since the length of $DC$ is $DB + BC$, we can see that the length of $DC$ is $2+\sqrt{3}$

#### Work Step by Step

The length of $DB$ is 2 The length of $BC$ is $\sqrt{3}$ Since the length of $DC$ is $DB + BC$, we can see that the length of $DC$ is $2+\sqrt{3}$

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