MATLAB Function Reference |

Secant of an argument in degrees

**Syntax**

**Description**

`Y = secd(X)`

is the secant of the elements of `X`

, expressed in degrees. For odd integers `n`

, `secd(n*90)`

is infinite, whereas `sec(n*pi/2)`

is large but finite, reflecting the accuracy of the floating point value of `pi`

.

**See Also**

sec | sech |

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