Sum and Difference Formulas Evaluate

The video tutorial covers the tangent formula for the difference of two angles, explaining how to apply it to specific angles like 45 and 120 degrees. The instructor discusses the importance of understanding the unit circle and reference angles, and demonstrates how to simplify expressions and rationalize denominators using the conjugate. The tutorial aims to provide a comprehensive understanding of these mathematical concepts, ensuring students can apply them effectively.

What is the process of rationalizing the denominator in a tangent formula?

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Describe how to simplify the expression obtained from the tangent formula.

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