How do you solve a triangle given a=10 b=8 B=130 degrees?
1 Answer
Nov 9, 2015
Explanation:
The Law of Sines states
We are given
manipulating that you get
Taking the inverse
This is the angle A. If you have 2 angles of a triangle you really have 3 angles. Just take the sum of the two known angles and subtract them from 180.
Now that you have all three angles you can use the cosine equation
I hope that helps.