Course: Trigonometry
Topic: Oblique Triangles and the Laws
Subtopic: Ambiguous Case


Depending on the information given in the Law of Sines, there is usually only one triangle that fits the info. However, sometimes there are two different triangles that could fit the data, or no triangle possible. This is called the ambiguous case. Watch out for it!


By the end of this topic you should know and be prepared to be tested on:


Terms you should be able to define: ambiguous case

Mini-Lectures and Examples

STUDY: Oblique Triangles - Law of Sines & the Ambiguous Case

Supplementary Resources

Explore one or both of these interactive demonstrations of the ambiguous case to better understand why it may have 0, 1, or 2 solutions: Ambiguous Case for the Law of Sines or Law of Sines, Ambiguous Case.

rev. 2020-10-31