Question

Find the value of Y. Round to the nearest tenth

Answer 1

27.8 degrees to the nearest tenth.

Explanation:

Using the Cosine Rule:

8^2 = 16^2 + 17^2 - 2.16.17cosY

cosY = (8^2 - 16^2 - 17^2) / (-2.16.17)

= 0.88419

Y = 27.848 degrees

Answer 2

27.8

Explanation:

Refer to the image attached.