Question

Find Y. Round to the nearest tenth. Y= ? Degrees

Answer 1

Answer:

Y = 59.0°

Step-by-step explanation:

Using the cosine rule in terms of x, y and z

cosY = $\frac{x^2+z^2-y^2}{2xz}$

with x = 22, y = 20 and z = 18

cosY = $\frac{22^2+18^2-20^2}{2(22)(18)}$

        = $\frac{484+324-400}{792}$

        = $\frac{408}{792}$, thus

Y = $cos^{-1}$ ($\frac{408}{792}$ ) ≈ 59.0° ( to the nearest tenth )

Answer 2

Answer: I think this is the right answer Y = 59.0°

Step-by-step explanation:

And also I hope this one helps