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COT function: Description, Usage, Syntax, Examples and Explanation

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What is COT function in Excel?

COT function is one of the Math and Trig functions in Microsoft Excel that return the cotangent of an angle specified in radians.

Syntax of COT function

COT(number)

The COT function syntax has the following arguments.

  • Number: The angle in radians for which you want the cotangent.

COT formula explantion

  • The absolute value of Number must be less than 2^27.
  • If Number is outside its constraints, COT returns the #NUM! error value.
  • If Number is a non-numeric value, COT returns the #VALUE! error value.
  • COT(0) returns the #DIV/0! error value.

Example of COT function

Steps to follow:

1. Open a new Excel worksheet.

2. Copy data in the following table below and paste it in cell A1

Note: For formulas to show results, select them, press F2 key on your keyboard and then press Enter.

You can adjust the column widths to see all the data, if need be.

Formula Description Result
=COT(30) Returns the cotangent of 30 (-0.156). -0.156
=COT(A5)
45 Returns the cotangent of the value in cell A5, 45 (0.617). 0.617

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