.. highlightlang:: us

.. index:: asin

.. _asin:

asin
====

.. us.tag  asin ENGLISH math-trigo

:ref:`asin` calculates the ac arcsine.

.. function::  r = asin(m)

.. us.return

**Return Value**

*r* is the arcsine of *m*.

.. us.params

**Parameters**

.. uparam:: m

   *m* is a real or complex matrix.

.. us.comment

**Comment**

Algorithm: ``-1i .* log (1i .* x + sqrt(1 - x .* x))``.

.. seealso::
   :ref:`overview-mathematic`,
   :ref:`sin`

:sub:`id-1210848`