Graal Forums - Where is Arcsin?

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Novo	07-07-2006 05:25 AM

Where is Arcsin?

Umm... Clientside doesn't have arcsin/arccos function! Why is that?

Temp Solution:

PHP Code:


		
			
function arcsin( i )

  {

  temp.step = 1 / 10000;

  for ( j = 0; j < abs(i); j += temp.step )

    temp.sum += (1 / (1 - j^2)^0.5) * temp.step ;

  return temp.sum;

  }

=] Actually... That's only a rough estimation. To get a more accurate answer, one would have to make the steps an infinitely small size... But there is a loop limit to Graal!

Admins

07-07-2006 09:50 AM

PHP Code:


		
			
function arcsin(val) return arctan(val/((1-val^2)^0.5));

You can 'easily' calculate arcsin and arccos using the arctan function, but in the recent versions arcsin and arccos are also built-in functions (it is in my version but not in the public version yet).

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