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Videos, worksheets, solutions, and activities to help students learn how to use the law of sines to solve triangles.

What is the Law of Sines?

The law of sines uses proportions to solve for missing lengths. The ratio of the sine of an angle to the side opposite it is equal for all three angles of a triangle. We can use the law of sines for solving for a missing length or angle of a triangle is by using the law of sines.

The law of sines works for any triangle, not just right triangles. The law of sines is also called the sine rule.

Law of Sines = \(\frac{{\sin (A)}}{A} = \frac{{\sin (B)}}{B} = \frac{{\sin (C)}}{C}\)

How to use the Law of Sines to solve triangles?

Trigonometry Law of Sines / Sine Rule

The Law of Sines (also known as the Sine Rule) is a method for working out the angle or side length in a non right angled triangle.

Learn how to solve a triangle using the law of sines with this step by step example.

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