How to apply the sum of angles for the tangent of an angle

The video tutorial explains how to break down the angle 13π/12 into two smaller angles, -π/3 and -3π/4, and calculate their tangent values. It then demonstrates how to use these values in the tangent addition formula to find the tangent of the original angle. The process involves rationalizing the denominator and simplifying the expression to arrive at the final tangent value.

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