Degrees to Radians Explain how to convert from degrees to radians.

Characteristics of a Graph In your own words, describe the meaning of amplitude and period.

Coterminal Angles in Degrees In Exercises 5 and 6 , determine two coterminal angles in degree measure (one positive and one negative) for each angle.

Coterminal Angles in Radians In Exercises 7 and 8 , determine two coterminal angles in radian measure (one positive and one negative) for each angle.

Degrees to Radians In Exercises 9 and 10, convert the degree measure to radian measure as a multiple of $\pi$ and as a decimal accurate to three decimal places.$\begin{array}{lll}{\text { (a) }-20^{\circ}} & {\text { (b) }-240^{\circ}} & {\text { (c) }-270^{\circ}} & {\text { (d) } 144^{\circ}}\end{array}$

Radians to Degrees In Exercises 11 and $12$ convert the radian measure to degree measure.(a) $\frac{7 \pi}{3} \quad$ (b) $-\frac{11 \pi}{30}$ (c) $\frac{11 \pi}{6} \quad$ (d) 0.438