What are the sum and difference formulas for tangent

The video tutorial explains how to find the tangent of an angle, specifically 75 degrees, using sum and difference formulas. It highlights the challenges of using the tangent function compared to sine and cosine, and provides a step-by-step approach to applying these formulas for accurate evaluation.

How do you evaluate the tangent function using the unit circle?

What is the formula for the tangent of the difference of two angles?