Evaluate tangent of an angle using the sum formula

The video tutorial covers the process of adding and subtracting angles, focusing on the tangent sum formula. It explains how to evaluate the tangent of specific angles, such as 60 and 45 degrees, and demonstrates the simplification of expressions using conjugates. The tutorial emphasizes the importance of understanding these concepts for solving related mathematical problems.

What is the value of 1 minus the product of tangent of 60 degrees and tangent of 45 degrees?

What is the final simplified answer when evaluating the expression derived from tangent addition?