Sin degree's to radians

BlitzMax Forums/BlitzMax Programming/Sin degree's to radians

DougUK

(Posted 2008) [#1]

Sin(54.66*(Pi/180))=0.016649618

How would i convert it to output in radians?

thus Sin(54.66*(Pi/180))=0.81573397

GfK	(Posted 2008) [#2]

Multiply the result by 0.0174532925

(which is Pi/180)

Yahfree

(Posted 2008) [#3]

doesn't Sin and Cos return radians by default? Judging by math.mod's source code they do.

Yahfree

(Posted 2008) [#4]

Edit: double post... wierd

DougUK

(Posted 2008) [#5]

GFK: I know thats the answer but it dosn't seem to work

Yan	(Posted 2008) [#6]

The *input* is an angle *not* the output...

As BMax expects all angles to be in degrees, you need to convert from radians...

Const RADIANS_TO_DEGREES! = 180.0! / Pi
Const DEGREES_TO_RADIANS! = Pi / 180.0!

Print "Sine of Rad = " + Sin(54.66 * DEGREES_TO_RADIANS!) ' wrong
Print "Sine of Deg = " + Sin((54.66 * DEGREES_TO_RADIANS!) * RADIANS_TO_DEGREES!) ' right, but mad!
Print "Sine of Deg = " + Sin(54.66) ' right

I don't know why you'd want to convert degrees to radians and back again, but still. ;o)

Who was John Galt?

(Posted 2008) [#7]

As Yan said. The output of sin represents a ratio of two lengths, so it's unitless. Maybe you are thinking of asin?

DougUK

(Posted 2008) [#8]

Thank you very much Yan, just what i was looking for :)

Yahfree

(Posted 2008) [#9]

now how do you draw a filled circle ;)

Bremer

(Posted 2008) [#10]

now how do you draw a filled circle

DrawOval( x#,y#,width#,height# )