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--- el:cos [2016/01/01 22:38]
+++ el:cos [2020/02/28 10:46] (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
+</code>
+Draws\\
+{{cos.jpg|Cosine Curve}}

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