### Home > PC > Chapter 6 > Lesson 6.3.1 > Problem 6-114

6-114.

Find the exact value of sec(*a* + *b*) where cos *a* = *b* = −*a* > 0 and csc *b* < 0. Hint: Find cos(*a* + *b*). Homework Help ✎

Sketch two triangles for this situation. One for angle *a* and one for angle *b*.