Home > PC3 > Chapter 2 > Lesson 2.2.4 > Problem 2-105
2-105.
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 . Can an angle have a sine equal to
and cosine equal to ? Give an angle or explain why not. Does
?