Cotangent

The cotangent function is defined by the formula $$\cot(z)=\dfrac{1}{\tan z}=\dfrac{\cos(z)}{\sin(z)},$$ where $\tan$ denotes the tangent function.

• Cotangent.png

  Plot of cotangent function on $\mathbb{R}$.

• Complex Cot.jpg

  Domain coloring of analytic continuation of $\cot$.