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Find the value of x round to the nearest tenth.

Find the value of x round to the nearest tenth.-example-1
User Luccas Correa
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1 Answer

23 votes
23 votes

9514 1404 393

Answer:

117.9°

Explanation:

Solving the Law of Cosines equation for C, we get ...

C = arccos((a² +b² -c²)/(2ab))

Filling in the values from the figure, we find the angle X to be ...

X = arccos((y² +z² -x²)/(2yz)) = arccos((55² +50² -90²)/(2·55·50))

X = arccos(-2575/5500) ≈ 117.9°

Find the value of x round to the nearest tenth.-example-1
User Alex Bravo
by
3.0k points