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# secd

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

### Syntax

y = secd(x)

x

a real array.

y

a real array.

### Description

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).

### Examples

secd(90)
sec(%pi/2)