Use the symmetry of the circle and reference arcs as needed to state the exact value of cot $\pi$ . A diagram may help.
A) 1
B) 0
C) -1
D) undefined

Question

Quizplus · Accepted Answer

Cotangent is the reciprocal of tangent, and the tangent of 90 degrees (or $\frac{\pi}{2}$ radians) is undefined because you cannot divide by zero. Since cotangent is the reciprocal, cot($\frac{\pi}{2}$) is also undefined.

Use the Symmetry of the Circle and Reference Arcs as Needed