Question

Find the the measure of angle T

Answer 1

38.7°

Explanation:

Use the Law of Cosines:

`7^2=11^2+10^2-2(11)(10)cosT` and

49 = 121 + 100 - 220cosT so

-172 = -220cosT and

.781818181 = cosT

Using the inverse cosine function on your calculator, you find that angle T = 38.7 degrees