SEC

SEC(number)

Returns the secant ratio of an angle.

number

The angle in radians.

REMARKS

* For an illustrated example refer to the Trigonometric Functions page.
* The secant of a number is 1/COS.
* This function does not have an inverse function.
* If "number" is not numeric, then #VALUE! is returned.
* If Abs(number) > 2^27, then #NUM! is returned.
* If your argument is in degrees, multiply it by PI/180 to convert it to radians.
* You can use the COS function to return the cosine ratio for an angle.
* You can use the SIN function to return the sine ratio for an angle.
* You can use the TAN function to return the tangent ratio for an angle.
* You can use the RADIANS function to convert from degrees to radians.
* You can use the DEGREES function to convert from radians to degrees.
* You can use the CSC function to return the cosecant ratio for an angle.
* You can use the COT function to return the cotangent ratio for an angle.
* This function was added in Excel 2013.
* For the Microsoft documentation refer to support.microsoft.com

	A
1	=SEC(n) = 1/COS(n)
2	=SEC("text") = #VALUE!