 # How to use the Excel PI function

The number ? is a mathematical constant. Originally defined as the ratio of a circle's circumference to its diameter, it now has various equivalent definitions and appears in many formulas in all areas of mathematics and physics. It is approximately equal to 3.14159.

Excel PI function returns the value of pi ? which is 3.14159
Syntax:

=PI() Let’s understand this function using an example.

As we know in mathematics

SIN(?/2)=1
So we will test this excel.
Use the formula

=SIN( PI() / 2 )

Here PI function returns the value of PI into the input of SIN function as a result we could get the value of SIN(?/2). Here we go, the PI function works great with other functions.

Hope you understood how to use the PI function in Excel. Explore more articles on Excel mathematical function here. Please feel free to state your query or feedback for the above article.

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