This PowerPoint™ lesson teaches students from Precalculus to Calculus about Sum and Difference Formulas. The lesson requires no extra work on the teacher's part. Display it via a projector or interactive board/tv, click through the slides which include animation and natural transitions, while walking around the room engaging with your students. This is also a great tool for asynchronous learning (easy to share with students to work through on their own time, and perfect for making videos).

The lesson includes examples that cover:

• finding the exact value of sine, cosine, and tangent
• writing the expression as a single angle

This is a wonderful resource for those new to teaching, or new to the material. It gives a great visual representation to student.