Half-Angle-Identities

In this lesson, we will continue to learn about trigonometric identities. Here, we will focus on half-angle identities. We will use these identities to find the exact value of a trigonometric function. Additionally, we will see problems where we need to find function values of s/2 given information about s. Lastly, we will look at an example of how to verify a trigonometric identity using half-angle identities.