Question

PLEASE HELP!!! Okay so I have a triangle and one side is 11 cm, another is 8 cm, and the other is 5 cm. Can someone please find the measure of each angle? 30 points!!!

Answer 1

When the length of sides are given, you can use law of cosine to find the angles
Refer to this website for details
https://www.mathsisfun.com/algebra/trig-cosine-law.html

11^=8^2+5^2-2*8*5cosA
-80cosA=32
cosA=-0.4
A is about 114 degree
use the same method to find out B and C, you will get 42 and 25