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# asecd

computes the element-wise inverse secant of the argument, results in degree.

### Calling Sequence

`y = asecd(x)`

### Arguments

x

Real or complex array

y

Real or complex array

### Description

Computes the element-wise inverse secant of the argument, results in degree. For real input data with absolute value greater than `1` the results are real and in `[-90 90]`.

`asecd(x)` is equal to `asec(x)*180/%pi`.

### Examples

```x=[1 2 -2 sqrt(2) -sqrt(2) 2/sqrt(3) -2/sqrt(3) -1];
asecd(x)```

### See Also

• asec — computes the element-wise inverse secant of the argument.
• secd — computes the element-wise secant of the argument given in degree

### References

• Kahan, W., "Branch cuts for complex elementary functions, or, Much ado about nothing's sign bit", Proceedings of the joing IMA/SIAM conference on The State of the Art in Numerical Analysis, University of Birmingham, A. Iserles and M.J.D. Powell, eds, Clarendon Press, Oxford, 1987, 165-210.
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