Home > CAAC > Chapter 16 > Lesson 16.9.2.2 > Problem 9-84
9-84.
Draw and label a diagram.
Use the Law of Cosines.
c2 = a2 + b2 − 2abcosC
c2 = 1052 + 752 − 2(105)(75)cos(35°)
Draw and label a diagram.
Use the Law of Cosines.
c2 = a2 + b2 − 2abcosC
c2 = 1052 + 752 − 2(105)(75)cos(35°)