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el:cos

Cos

Format

cos ( expression )

Description

Computes the cosine of expression. Expression must be in radians.

Note

The cos function does not produce an exact result.

See Also

Example

clg
color black
# draw a line across the graphic output
line 0,150,300,150
# where do we start
lastx = 0
lasty = cos(0) * 50 + 150
# now step across the line and draw
for x = 0 to 300 step 5
   angle = x / 300 * 2 * pi
   y = cos(angle) * 50 + 150
   line lastx, lasty, x, y
   lastx = x
   lasty = y
next x

Draws
Cosine Curve

el/cos.txt · Last modified: 2016/01/01 22:38 (external edit)