# IMSEC function

The IMSEC function returns the secant of the given complex number. For example, a given complex number "x+yi" returns "sec(x+yi)."

## Parts of an IMSEC function

`IMSEC(number) `

 Part Description Notes `number` The complex number for which you want the secant. This can be either the result of the COMPLEX function, a real number interpreted as a complex number with imaginary parts equal to 0, or a string in the format “x+yi” where x and y are numeric.

## Sample formulas

`IMSEC(COMPLEX(4,6))`

`IMSEC(4)`

`IMSEC("2+3i")`

## Notes

The `IMSEC` function returns an error if the given number isn't a valid complex number.

## Examples

 A B 1 Formula Result 2 `=IMSEC(COMPLEX(4,1))` -0.557760402867351-0.491827502294509i 3 `=IMSEC(3.5)` -1.06785504719181 4 `=IMSEC("3+2i")` -0.263512975158389+0.0362116365587685i

## Related functions

IMCOS:  The IMCOS function returns the cosine of the given complex number.

IMSECH:  The IMSECH function returns the hyperbolic secant of the given complex number.

COMPLEX: The COMPLEX function creates a complex number, given real and imaginary coefficients.