 |
| ||
| |||
|
| Math Central | Quandaries & Queries |
|
Question from Brooklyn, a student: What is the equation to find the length of the third side of a triangle if you have the length of A, B, and the angles(s)? |
Hi Brooklyn.
It is called the Law of Cosines and it is described on this page or the Law of Sines described on this page.
If you have a right-angled triangle, you might find it easier to work with the Pythagorean Theorem, described here.
Hope this helps,
Stephen La Rocque.
| ||
| ||
| ||
 |
 |
|
Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.