CNA SOMEONE HELP ME measure of angle C = 48 degrees, a = 5, b = 9. What is the length of c to the nearest tenth?

asked Mar 26, 2023 144k views

1 vote

CNA SOMEONE HELP ME

measure of
angle C = 48 degrees, a = 5, b = 9. What is the length
of c to the nearest tenth?

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4 votes

Answer: 6.8

Explanation:

By the Law of Cosines,

$c^2 = 5^2 + 9^2 - 2(5)(9)\cos 48^(\circ)\\\\c=\sqrt{5^2 + 9^2 - 2(5)(9)\cos 48^(\circ)}\\\\c \approx 6.8$

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