How to use the half angle formula for tangent tan75

The video tutorial explains the tangent half angle formula, focusing on calculating the tangent of 75 degrees using this formula. It involves determining the corresponding angle on the unit circle, simplifying the expression, and rationalizing the denominator to arrive at the final solution. The tutorial emphasizes understanding the unit circle and the process of simplifying mathematical expressions.

Explain the process of rationalizing the denominator as described in the text.

What is the final answer derived from the calculations involving tangent 75 degrees?