SEC function

Category: Math and trigonometry
Introduced: Excel 2013

Summary

Returns the secant of an angle

Syntax

SEC(number) The SEC function syntax has the following arguments.
Number Required. Number is the angle in radians for which you want the secant.

Example

=SEC(45)
=SEC(30)

Microsoft Support Page

https://support.microsoft.com/en-us/office/sec-function-ff224717-9c87-4170-9b58-d069ced6d5f7

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