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# secd

Secant of argument in degrees

• Y = secd(X)

## Description

Y = secd(X) returns the secant of the elements of X, which are expressed in degrees.

## Examples

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### Secant of 90 degrees compared to secant of π/2 radians

```secd(90)
```
```ans =

Inf```
```sec(pi/2)
```
```ans =

1.6331e+16```

secd(90) is infinite, whereas sec(pi/2) is large but finite.

### Secant of vector of complex angles, specified in degrees

```z = [35+i 15+2i 10+3i];
y = secd(z)```
```y =

1.2204 + 0.0149i   1.0346 + 0.0097i   1.0140 + 0.0094i```

## Input Arguments

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### X — Angle in degreesscalar value | vector | matrix | N-D array

Angle in degrees, specified as a real-valued or complex-valued scalar, vector, matrix, or N-D array. The secd operation is element-wise when X is nonscalar.

Example:

Data Types: single | double
Complex Number Support: Yes

## Output Arguments

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### Y — Secant of anglescalar value | vector | matrix | N-D array

Secant of angle, returned as a real-valued or complex-valued scalar, vector, matrix, or N-D array of the same size as X.

## See Also

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