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In ΔABC, if C is a right angle, what is the measure of x?

In ΔABC, if C is a right angle, what is the measure of x?-example-1
User Arslaan Ejaz
by
3.1k points

1 Answer

27 votes
27 votes

Answer:

x ≈ 72.3°

Explanation:

using the cosine ratio in the right triangle

cos x =
(adjacent)/(hypotenuse) =
(AC)/(AB) =
(7)/(23) , then

x =
cos^(-1) (
(7)/(23) ) ≈ 72.3° ( to the nearest tenth )

User Noelia
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2.3k points