Tjk Posted July 6, 2006 Share Posted July 6, 2006 I can't seem to find true inverse sine. I have tried asin and asinh and both give weird answers. Here's the code:[code]$opposite= 295;$hyp= 375.298547826;$sinx= $opposite/ $hyp;$x= asin($sinx);[/code]This gives me an answer of 1.10573218834 when it should give me an answer of ~51.813Is there a setting in php.ini i need to change? The script is being run on a linux server and running the latest version of PHP.Any help is appreciated.-TjkP.S: How do I use the php tags which colour the code. I haven't been able to find them. :)EDIT: I managed to solve my own problem. (For anyone with a similiar problem) the answer is that asin always returns in radians therefore you need to use rad2deg() to convert the angle into degrees. Link to comment https://forums.phpfreaks.com/topic/13869-php-funcrtions-inverse-sine/ Share on other sites More sharing options...
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