el:cos

# Differences

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 — el:cos [2016/01/01 22:38] (current) Line 1: Line 1: + ===== 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 ==== + + [[acos|Acos]],​ [[asin|Asin]],​ [[atan|Atan]],​ [[degrees|Degrees]],​ [[radians|Radians]],​ [[sin|Sin]],​ [[tan|Tan]] + + ==== Example ==== + + <​code>​ + 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\\ + {{cos.jpg|Cosine Curve}}
el/cos.txt · Last modified: 2016/01/01 22:38 (external edit)

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