Excel COS Function

This post will guide you how to use Excel COS function with syntax and examples in Microsoft excel.

Description

The Excel COS function returns the cosine of a given angle. If you want to supply an angle to COS function in degrees, then you need to multiply the angle by PI()/180. Or you can use the RADIANS function to the angle to radians.

The COS function is a build-in function in Microsoft Excel and it is categorized as a Math and Trigonometry Function.

The COS function is available in Excel 2016, Excel 2013, Excel 2010, Excel 2007, Excel 2003, Excel XP, Excel 2000, Excel 2011 for Mac.

Syntax

The syntax of the COS function is as below:

= COS(number)

Where the COS function argument is:

  • number –This is a required argument. A number that used to be calculate the cosine of an angle.

Note:

  • If your argument is in degrees, multiply it by PI()/180 or use the RADIANS function to convert it to radians.

Excel COS Function Examples

The below examples will show you how to use Excel COS Function to return the cosine of an angle.

1# get the cosine of 1.25 radians, enter the following formula in Cell B1.

=COS(1.25)

excel cos examples1

2# get the cosine of 45 degrees, enter the following formula in Cell B2.

=COS(45*PI()/180)

excel cos examples2

3# get the cosine of 30 degrees, enter the following formula in Cell B3.

=COS(RADIANS(30))

excel cos examples3


Related Functions

  • Excel SIN function
    The Excel TANH function returns the hyperbolic tangent of a given number.The syntax of the TANH function is as below:=TANH (number)…
  • Excel ACOS function
    The Excel ACOS function returns the arccosine value of a number.The ACOS function is a build-in function in Microsoft Excel and it is categorized as a Math and Trigonometry Function.The syntax of the ACOS function is as below:= ACOS(number)…
  • Excel ACOSH function
    The Excel ACOSH function returns the inverse hyperbolic cosine of a number.The syntax of the ACOSH function is as below:= ACOSH (number)…
  • Excel ASIN function
    The Excel ASIN function returns the arcsine value of a number.The syntax of the ASIN function is as below:= ASIN (number)…
  • Excel PI function
    The Excel PI function returns the value of mathematical constant PI. The returned value is 3.14159265358979 and ti will accurate to 15 digits.The syntax of the PI function is as below:=PI()…
  • Excel TAN function
    The Excel TAN function returns the tangent of a given angle. So you can use this function to calculate the tangent of an angle in radians. The syntax of the TAN function is as below:=TAN (number)…
  • Excel RADIANS function
    The Excel RADIANS function converts degrees into radians in Excel.The syntax of the RADIANS function is as below:=RADIANS (angle)…
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