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2 years ago

Does anyone know this answer I don’t get it

Mathematics

1 answer:

Svetradugi [14.3K]2 years ago

6 0

Answer:

∠ XYZ ≈ 66.4°

Step-by-step explanation:

Using the cosine ratio in the right triangle

cosY = $\frac{adjacent}{hypotenuse}$ = $\frac{XY}{YZ}$ = $\frac{6}{15}$ , then

∠ Y = $cos^{-1}$ ( $\frac{6}{15}$ ) ≈ 66.4° ( to 1 dec. place )

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3 years ago

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andrey2020 [161]

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Step-by-step explanation:

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x + 4y = 13 - - - - - - - - - - -1

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