55 lines
No EOL
1.7 KiB
Text
55 lines
No EOL
1.7 KiB
Text
#import "@preview/cetz:0.2.2"
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#set page(width: auto, height: auto, margin: .5cm)
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#show math.equation: block.with(fill: white, inset: 1pt) //for not showing the grid on math
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#cetz.canvas(length: 3cm, {
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import cetz.draw: *
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set-style(
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mark: (fill: black, scale: 2),
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stroke: (thickness: 0.4pt, cap: "round"),
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angle: (
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radius: 0.3,
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label-radius: .22,
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fill: green.lighten(80%),
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stroke: (paint: green.darken(50%))
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),
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content: (padding: 1pt)
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)
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grid((-1.5, -1.5), (1.4, 1.4), step: 0.5, stroke: gray + 0.2pt)
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circle((0,0), radius: 1)
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line((-1.5, 0), (1.5, 0), mark: (end: "stealth"))
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content((), $ x $, anchor: "west")
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line((0, -1.5), (0, 1.5), mark: (end: "stealth"))
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content((), $ y $, anchor: "south")
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for (x, ct) in ((-1, $ -1 $), (-0.5, $ -1/2 $), (1, $ 1 $)) {
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line((x, 3pt), (x, -3pt))
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content((), anchor: "north", ct)
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}
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for (y, ct) in ((-1, $ -1 $), (-0.5, $ -1/2 $), (0.5, $ 1/2 $), (1, $ 1 $)) {
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line((3pt, y), (-3pt, y))
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content((), anchor: "east", ct)
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}
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// Draw the green angle
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cetz.angle.angle((0,0), (1,0), (1, calc.tan(30deg)),
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label: text(green, [#sym.alpha]))
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line((0,0), (1, calc.tan(30deg)))
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set-style(stroke: (thickness: 1.2pt))
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line((30deg, 1), ((), "|-", (0,0)), stroke: (paint: red), name: "sin")
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content(("sin.start", 50%, "sin.end"), text(red)[$ sin alpha $])
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line("sin.end", (0,0), stroke: (paint: blue), name: "cos")
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content(("cos.start", 50%, "cos.end"), text(blue)[$ cos alpha $], anchor: "north")
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line((1, 0), (1, calc.tan(30deg)), name: "tan", stroke: (paint: orange))
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content("tan.end", $ text(#orange, tan alpha) = text(#red, sin alpha) / text(#blue, cos alpha) $, anchor: "west")
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}) |