This lesson will demonstrate how to find the area and radius of a circle when given the sector area and central angle measure. It is 4 of 8 in the series titled "Sector Area of a Circle."

Northeast Parallel Architectures Center of Syracuse University offers a quick overview of radian measurement of angles. Also includes an example.

In Spanish. Play submarine by using trigonometry, learn the law of sines and cosine, build an instrument to measure angles and distance and find out who was the father of Trigonometry.

This lesson will provide examples that use the characteristics of rhombi to solve for unknown variables, side lenths, and angle measures. It is 4 of 5 in the series titled "Rhombi Practice Problems."

This lesson gives a tutorial on the measure of an angle. Includes sample problems and solutions.

Introduction to right triangles and how to solve them using trigonometric functions. Very nice interactive demonstration of what happens when the angle measurements change and how it effects the calculations. This visual might be just...

Introduction to right triangles and how to solve them using trigonometric functions. Very nice interactive demonstration of what happens when the angle measurements change and how it effects the calculations. This visual might be just...

Introduction to right triangles and how to solve them using trigonometric functions. Very nice interactive demonstration of what happens when the angle measurements change and how it effects the calculations. This visual might be just...

Introduction to right triangles and how to solve them using trigonometric functions. Very nice interactive demonstration of what happens when the angle measurements change and how it effects the calculations. This visual might be just...

Digital image of a protractor.

This lesson gives a tutorial on the measure of an angle. Includes sample problems and solutions.

This lesson gives a tutorial on the measure of an angle. Includes sample problems and solutions.