The undefined value of [tex]cot \theta = 0, \pi[/tex].
What are trigonometric ratios ?
"The six trigonometric ratios are sine (sin), cosine (cos), tangent (tan), cotangent (cot), cosecant (cosec), and secant (sec). In geometry, trigonometry is a branch of mathematics that deals with the sides and angles of a right-angled triangle. Therefore, trig ratios are evaluated with respect to sides and angles.
The six trigonometric ratios are sine (sin), cosine (cos), tangent (tan), cotangent (cot), cosecant (cosec), and secant (sec). In geometry, trigonometry is a branch of mathematics that deals with the sides and angles of a right-angled triangle. Therefore, trig ratios are evaluated with respect to sides and angles. "
The values of cot theta is undefined for [tex]n\pi[/tex].
So, 0 , pi , 2pi , 3pi .....npi.
Hence C and D are correct option.
To know more about trigonometric ratios here
https://brainly.com/question/14746686
#SPJ3
