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The Law of Sines

The law of sines (or sine rule) relates the lengths of a triangle's sides to the sines of its angles. The applet below lets you discover this useful law (Theorem), learn how it is derived (Proof) and interact with a dynamic triangle (Explore!) to deepen your understanding of this concept.

Solving a triangle means finding missing sides and angles - Let's solve one.

Solve the given triangle, with , and .

To be or not to be....

Use the Law of Sines to show whether a triangle with: , and does exist or not. Explain you reasoning below.