Video lessons with examples and solutions to help High School 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.
Law of Sines

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

Trigonometry: The Law of Sines
Law of Sines

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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.

Rotate to landscape screen format on a mobile phone or small tablet to use the **Mathway** widget, a free math problem solver that **answers your questions with step-by-step explanations**.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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