## Re:Plotting a Sin graph

In article <8D8840D.05F1001B04.uu...@als.co.za>, JOHAN KOHLER

<johan.koh...@als.co.za> writes

##### Quote

> AME> Function Sin(<angle in RADIANS>: Real): Real;

> AME> Pi radians := 180 degrees

>Line 1 I understand - it is the Sin function in TP. But how do radians work?

>Normal degrees go (from top clockwise) 0, 90, 180, 270. What is the order

>for radians?

0 degrees = 0 radians

90 degrees = Pi/2 radians

180 degrees = Pi radians

270 degrees = 3Pi/2 radians

etc.

1 degree = Pi/180 radians

The reason radians are used, is because, well you know the circumference

of an arc with degrees is (angle/180)*Pi*r

Using radians it's just the angle*radius, which is a hell of a lot

simpler..

Anyway, I don't think this is really relevant right now..

Lots of love

--

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Michael Stephenson @(^_^)(^_^)@ mich...@jlmaa.demon.co.uk

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