Write tan(pi-theta) as a Function of Theta Alone Using the Difference Formula & Unit Circle

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The identity for the tangent of a difference is tan(A-B)=(tanA-tanB)/(1+tanAtanB). This is used to expand tan(pi-theta). The unit circle is used to find tan(pi) and this value is used to simplify the expansion of tan(pi-theta).

Timestamps
0:00 Introduction
0:14 Identity for Tan(A-B)
1:30 Use Unit Circle
  1. Wendy
  2. Precalculus
  3. Trigonometry
  4. tan(A-B)=(tanA-tanB)/(1 tanAtanB)
  5. Tangent of Difference
  6. Difference