### Home > PC3 > Chapter 8 > Lesson 8.3.3 > Problem 8-122

8-122.

Angles

*u*and*v*are in the same quadrant. If cos(*u*) =and sin( *v*) = –, evaluate: Homework Help ✎ tan(

*u*+*v*)cos(

*v*–*u*)

If cosine is positive and sine is negative, which quadrant are *u* and *v* in?

Draw a triangle diagram for each angle. One is done for you.