# Can you use trigonometric functions for any kind of triangle?

##### 1 Answer

Mar 26, 2015

It depends on what you mean by "use trigonometric functions".

The Law of Sines tells us that for any triangle: labelled with

we have:

(So also, by algebra:

The Law of Cosines generalizes the Pythagorean Theorem.

It says that in any triangle labelled as above, we have: