### Home > GC > Chapter 7 > Lesson 7.2.2 > Problem 7-59

7-59.

How do the angles of a triangle relate to each other? How will this help you solve for ∠*DCA*?

46° + 37° + ∠*ACB* = 180° Then how are ∠*ACB* and ∠*ACD* related?

Use similar methods to those used for part (a). The methods might be used in a different order.