Answer:
51.3
Step-by-step explanation:
This is a right triangle (because of the 90° angle). For any right triangle, you can use the following:
Sine = Opposite / Hypotenuse
Cosine = Adjacent / Hypotenuse
Tangent = Opposite / Adjacent
You can remember this as SOH-CAH-TOA.
We want to find the angle y. We know that the opposite side is 10 and the adjacent side is 8. So we can use tangent:
tan y = 10 / 8
y ≈ 51.3°
