How to use the sum and difference formula for tangent

The video tutorial explains how to use sum and difference formulas for trigonometric functions, specifically focusing on the tangent function. It demonstrates breaking down complex expressions into simpler angles, applying the sum formula, and using the unit circle for simplification. The tutorial also covers techniques for simplifying fractions and using conjugates to eliminate radicals. The session concludes with a final simplification and error correction, ensuring a clear understanding of the process.

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