Trigonometry and Area

What is the Formula for the Area of a Triangle Using Sines?

You can use sine to help you find the area of a triangle! All you need is two sides and an angle measurement! This tutorial helps you find this formula.
How Do You Find the Area of a Regular Polygon When You Know the Length of One Side?

It might surprise you to learn that all you need to know to find the area of a regular polygon is one side length and the number of sides. It's true! Watch this tutorial to find out how.