Chapter 2 - Acute Angles and Right Triangles - Section 2.3 Finding Trigonometric Function Values Using a Calculator - 2.3 Exercises - Page 63: 10

$\tan$ 421$^{\circ}$ 30' = 1.84177088

$\tan$ 421$^{\circ}$ 30' First, convert to a fraction $\tan$ 421$^{\circ}$ $\frac{30}{60}$ Convert the fraction to a decimal $\frac{30}{60}$ = 0.50 Therefore: $\tan$ 421$^{\circ}$ 30' = $\tan$ 421.50$^{\circ}$ $\tan$ 421.50$^{\circ}$ = 1.84177088 $\tan$ 421$^{\circ}$ 30' = 1.84177088