Learn how to evaluate tangent using the difference formula of two angles

The video tutorial explains how to use sum and difference formulas to evaluate angles on the unit circle without a calculator. It covers identifying and simplifying angles, applying tangent formulas, and rationalizing denominators to find exact answers. The tutorial emphasizes algebraic methods over approximate calculations.

Describe the process of rationalizing the denominator in a tangent problem.

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What is the result of dividing -2 into both parts of the expression derived from the tangent problem?

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Summarize the three parts involved in solving tangent problems as discussed in the lesson.

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