Answer:
Explanation:
Use the cos law.
c^2 = a^2 + b^2 - 2*a*b*Cos(C)
Givens
a = 9 cm
b = 6 cm
C = 73
Solution
c^2 = 9^2 + 6^2 - 2*9*6 * Cos(73) Multiply 2*9*6 by Cos(73)
c^2 = 81 + 36 - 108 * 0.2923 Combine
c^2 = 117 - 31.57 Subtract
c^2 = 85.43 Take the square root of both sides
c = 9.24