# Chapter 1 - Trigonometric Functions - Section 1.1 Angles - 1.1 Exercises: 55

20.9$^{\circ}$

#### Work Step by Step

20$^{\circ}$54'= 20$^{\circ}$ + $\frac{54}{60}$$^{\circ}$ = 20.9$^{\circ}$

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