PHP asin() Function
 Complete PHP Math Reference
Definition and Usage
The asin() function returns the arcsine of a number as a numeric value between
-PI/2 and PI/2 radians.
Syntax
| Parameter |
Description |
| x |
Required. Must be a numeric value in the range -1 to 1 |
Tips and Notes
Note: If the parameter x is
outside the range -1 to 1, the browser will return -1.#IND.
Note: 1 will return the value
of PI/2.
Example
In this example we will get the arcsine of different numbers:
<?php
echo(asin(0.64) . "<br />");
echo(asin(0) . "<br />");
echo(asin(-1) . "<br />");
echo(asin(1) . "<br />");
echo(asin(2))
?>
|
The output of the code above will be:
0.694498265627
0
-1.57079632679
1.57079632679
-1.#IND
|
Complete PHP Math Reference
Need an easy way to get data into XML, or transform XML to another format?
MapForce lets you map XML data to/from any combination of XML, database, flat file,
Excel 2007, XBRL, or Web services data. Then it transforms data instantly or
auto-generates royalty-free code for recurrent conversions.
New features in Version 2010!
- Easy-to-use, graphical data mapping interface
- Instant data transformation
- XSLT 1.0/2.0 and XQuery code generation
- Java, C#, and C++ code generation
- Advanced data processing functions
- Support for all major relational databases including SQL Server, IBM DB2, Oracle, and more
- Visual Studio & Eclipse integration
- Available in 32-bit and 64-bit versions
Download a fully-functional trial today!
|
|
|
|
