Question

What is the exact value of cotangent (StartFraction 3 pi Over 4 EndFraction)?.

Answer 1

`cot((3\pi)/(4))=-1`

Explanation:

`cot((3\pi)/(4))\\ \\=(cos((3\pi)/(4)))/(sin((3\pi)/(4)))\\ \\=(-(√(2))/(2))/((√(2))/(2))\\ \\=-1`