### Home > CCA2 > Chapter Ch12 > Lesson 12.1.2 > Problem 12-30

12-30.

Salina, Tamara, and Uma are working on their homework together. Salina tells her friends that she got* ** ** *

Picture a unit circle. Is it possible for the cosine of three different angles in three different quadrants to be the same?

Use the unit circle below to help you. Is cosine the same for all of these angles?