The Unit Circle: Ratios
View the Lesson | MATHguide homepage Updated June 21st, 2023

Status: Waiting for your answers.

Converson Factors
Problem:Use the unit circle to evaluate cos(180°).
Solution:
Make a Selection Below
1 -1 0
√3/2 -√3/2
√2/2 -√2/2
1/2 -1/2