The Sine Law

Once you have mastered the right-angled trigonometric ratios, it's time to ask the question:

"What about triangles that are NOT right-angled triangles?"

In order to solve triangles that are not right-angled triangles (acute or obtuse), we need some new tools. The first new tool we will examine is the sine law.

What would you like to do?

• See the sine law and some examples of how it works.
• Try some sample sine law questions.