Cot 0 Degrees

Sin, Cos, Tan, Cot of an Angle

What is cot 0°?

Answer

cot 0°

is undefined

Angle in radians: 0° = 0. The point of the angle is on the x-axis: (1, 0).

sin 0° = 0, and cot = cos / sin: you can't divide by zero, so the value doesn't exist.

cot 0° = cos 0° / sin 0° = 1 / 0

P(cos 0°, sin 0°) = (1, 0)

Line OP of 0° runs parallel to the line y = 1: they never meet, so cot 0° doesn't exist.

All four functions of 0°
Function	Exact value	Decimal
sin 0°	0	0
cos 0°	1	1
tan 0°	0	0
cot 0°	undefined	—

See Also

Arcsin, Arccos, Arctan, Arccot - The angle from the value of its sine, cosine, tangent or cotangent: exact in degrees and π, with the check and the unit circle
Square Root Calculator - Calculate the square root of any number
Simplify Square Root Calculator - Write any square root in simplest radical form, step by step
Geometry Formulas: Area, Volume, Perimeter - The formula for every standard shape, where it comes from, and worked examples

Recalculate with different values ↑

Cotangent of nearby angles

Angle	cot
0°	undefined
1°	≈ 57.2900
2°	≈ 28.6363
3°	≈ 19.0811
4°	≈ 14.3007
5°	≈ 11.4301
6°	≈ 9.5144

FAQ

What is cot 0°?

cot 0° is undefined

Why does cot 0° not exist?

The point of 0° on the unit circle is (1, 0): sin 0° = 0, and cot = cos / sin would divide by zero. On the unit circle line OP runs parallel to the line y = 1 and never meets it.

What is the sign of cotangent in each quadrant?

Cotangent is the ratio x / y of the point of the angle: positive in quadrants I and III, negative in II and IV.

See Also