If triangle ABC has the following measurements, find the measure of side c: a = 9 b = 12 C = 64° A) 18.61 B) 11.42 C) 17.88 D) 5.56

asked Jul 6, 2024 17.4k views

2 votes

If triangle ABC has the following measurements, find the measure of side c: a = 9 b = 12 C = 64°

A) 18.61
B) 11.42
C) 17.88
D) 5.56

by Gim

6.9k points

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4 votes

Answer:

B) 11.42

Explanation:

Using the Law of Cosines:

$c=√(a^2+b^2-2ab \cos C)=\sqrt{9^2+12^2-2(9)(12)\cos 64^(\circ)} \approx 11.42$

Dharini S answered Jul 11, 2024

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