Write sum and difference formula for tangent as one trig function

The video tutorial explains how to identify tangent formulas by comparing them to sine and cosine. It focuses on determining whether a formula represents the tangent of the addition or difference of two angles, concluding that the example given is a difference due to the minus sign. The instructor identifies the variables involved and presents the final answer, suggesting further simplification.

What is the final answer provided by the speaker?

What additional step does the speaker suggest regarding the angles?