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Please note that the recommended version of Scilab is 6.1.1. This page might be outdated.
See the recommended documentation of this function

Scilab help >> Elementary Functions > Trigonometry > secd


computes the element-wise secant of the argument given in degree

Calling Sequence

y = secd(x)



a real array.


a real array.


The entries of y are the secant of the entries of x given in degree. The results are real and in . For entries equal to n*180 with n integer, the result is exactly -1 or +1. For entries equal to n*90with n integer and odd the result is infinite (or an error depending on ieee mode).



See Also

  • cosd — element-wise cosine function, argument in degree
  • sec — computes the element-wise secant of the argument
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Last updated:
Tue Apr 02 17:36:21 CEST 2013