### Home > PC > Chapter 5 > Lesson 5.1.2 > Problem 5-24

5-24.

Sketch a unit circle. In your circle, sketch an angle between

A positive cosine and a negative sine.

A sine of

. A negative cosine and a negative sine.

A cosine of about

and a sine of about . Could an angle have a sine equal to

and cosine equal to ? Give an angle or explain why not. Does

?