What is COT function in Excel?
The COT function is one of the math functions of Excel.
It returns the cotangent of an angle.
We can find this function in Math&trig category of insert function Tab.
How to use COT function in excel
- Click on an empty cell (like F5 )

2. Click on the fx icon (or press shift+F3)

3. In the insert function tab you will see all functions

4. Select math and trig category
5. Select COT function
6. Then select ok

7. In the function arguments Tab you will see COT function
8. Number section is the angle in radians for which you want the cotangent
9. You will see the result in the formula result section (for example COT pi()/3=0.57)

Examples of COT function in excel
Example 1:
How to use COT function in excel
You can see examples of COT function below:

cot(A2) ----->>>>answer is 0
cot(A3) ----->>>>answer is 0.57
cot(A4) ----->>>>answer is 1
cot(A5) ----->>>>answer is -1.37
cot(A6) ----->>>>answer is 1.73
Python code for COT function
1/np.cot(x)
How to plot Y=COT(X) with python code in excel
import numpy as np
from matplotlib import pyplot as plt
def f(x):
return np.cot(x)
x = np.linspace(-2*np.pi, 2* np.pi, 1000)
plt.plot(x,1/ f(x))
plt.ylim(-5,5)
plt.show()
What is the purpose of COT function?
It returns the cotangent of an angle.
What is the Return value of COT function?
It returns a number.
How many arguments does COT function have?
This function has just 1 Argument.
The argument of COT function is number.
Number section is the angle in radians for which you want the cotangent
The argument of COT function is required and not optional.
COT(number) = number
Which version of excel supports COT function?
This function is available for all excel versions (2003-2019)