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Andrew Vickers · Answer 1 · 2024-03-19T00:10:19+0000

Answer:

x ≈ 16.2

Explanation:

using the cosine ratio in the right triangle

cos72° =
(adjacent)/(hypotenuse) =
(NO)/(MO) =
(5)/(x) ( multiply both sides by x )

x × cos72° = 5 ( divide both sides by cos72° )

x =
(5)/(cos72) ≈ 16.2 ( to the nearest tenth )