Chapter 2 - Acute Angles and Right Triangles - Section 2.3 Finding Trigonometric Function Values Using a Calculator - 2.3 Exercises - Page 66: 15

$\cot$ 183$^{\circ}$ 48' = 15.05572272

$\cot$ 183$^{\circ}$ 48' First, convert to a fraction $\cot$ 183$^{\circ}$ $\frac{48}{60}$ Convert the fraction to a decimal $\frac{48}{60}$ = 0.80 Therefore: $\cot$ 183$^{\circ}$ 48' = $\cot$ 183.80$^{\circ}$ $\cot$ 183.80$^{\circ}$ = $\frac{1}{\tan183.80}$ $\frac{1}{\tan183.80}$ = 15.05572272 $\cot$ 183$^{\circ}$ 48' = 15.05572272