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loris [4]
3 years ago
9

Find the angle of XYZ. Give your answer to one decimal place

Mathematics
2 answers:
Mariulka [41]3 years ago
5 0

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

masya89 [10]3 years ago
3 0

Answer:

∠ XYZ ≈ 72.9°

Step-by-step explanation:

Using the tangent ratio in the right triangle

tanY = \frac{opposite}{adjacent} = \frac{XZ}{XY} = \frac{13}{4} , then

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

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