Question

Does anyone know this answer I don’t get it

Answer 1

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 )