What is the domain of cotangent? Trigonometry Graphing Trigonometric Functions Graphing Tangent, Cotangent, Secant, and Cosecant 1 Answer George C. May 25, 2015 cot theta = cos theta / sin thetacotθ=cosθsinθ is well defined provided sin theta != 0sinθ≠0 sin theta = 0sinθ=0 for theta = n piθ=nπ for all n in ZZ. So the domain of cot is RR \ { n pi : n in ZZ } Answer link Related questions How do you find the asymptotes for the cotangent function? How do you graph tangent and cotangent functions? How do you Sketch the graph of y=-2+cot(1/3)x over the interval [0, 6pi]? How do you graph y=-3tan(x-(pi/4)) over the interval [-pi, 2pi]? How do you sketch a graph of h(x)=5+frac{1}{2} \sec 4x over the interval [0,2pi]? What is the amplitude, period and frequency for the function y=-1+\frac{1}{3} \cot 2x? How do you graph y = 3 sec(2x)? How do you graph y=tan(2x+pi/4)? What is the domain of y = tan(x) + 2? How do you graph csc(x-pi/2)? See all questions in Graphing Tangent, Cotangent, Secant, and Cosecant Impact of this question 6849 views around the world You can reuse this answer Creative Commons License