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See the recommended documentation of this function

Scilab help >> Elementary Functions > Trigonometry > secd

secd

Compute the element-wise secant of the argument given in degree.

Calling Sequence

y = secd(x)

Arguments

x

Real array.

y

Real array.

Description

The entries of y are thesecant 1/cos of the entries of x given in degree. The results are real and in ]-%inf -1] U [1 %inf[. 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).

Examples

secd(90)
sec(%pi/2)

See Also

  • cosd — element-wise cosine function, argument in degree
  • sec — Compute the element-wise secant of the argument.

Authors

  • Serge Steer, INRIA
Scilab Enterprises
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Copyright (c) 1989-2007 (ENPC)
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Last updated:
Thu May 12 11:44:14 CEST 2011