What are the sum and difference formulas for sine

The video tutorial explains the sum and difference formulas for sine, demonstrating how to break down angles into smaller parts to evaluate sine values. It covers the application of these formulas, emphasizing the correct method to find the sine of angles like 70 degrees by using known values of smaller angles. The tutorial also highlights common mistakes and provides a foundation for further videos on applying these formulas.

What common mistake should be avoided when applying the sum and difference formulas for sine?

Describe the formula for the sine of the difference of two angles.