Respuesta :

LucaFontana

Answer:

72.9 degrees

Step-by-step explanation:

First we need to calculate the hypothenuse with the teorem of Pythagoras. ZY = sqrt(13^2+4^2) = 13.6 cm. sqrt stands for square root.

The we calculate the cosine of our angle (we could use the sine but I'll use the cosine here, the method is a little different with the sine). For the cosine divide the adjacent side by the hypothenuse: 4/13.6 =0.294

then we use the cos^-1 function on the calculator , so cos^-1(0.294) =72.897 =72.9 degrees.

I hope this helped

Answer:

∠ XYZ ≈ 72.9°

Step-by-step explanation:

Using the tangent ratio in the right triangle

tanY = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{XZ}{XY}[/tex] = [tex]\frac{13}{4}[/tex] , then

∠ XYZ = [tex]tan^{-1}[/tex] ([tex]\frac{13}{4}[/tex] ) ≈ 72.9° ( to 1 dec. place )

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