Answer:
c = 14.43 units to the nearest hundredth.
Step-by-step explanation:
We are given 2 sides and the included angle so we use the Cosine Rule.
c^2 = a^2 + b^2 - 2absinC
= 20^2 + 17^2 - 2.29.17cos45
= 208.17
c = √208.167
= 14.43.
