Difference between revisions of "Cosine"
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<jsxgraph box="boxR" width="500" height="500"> | <jsxgraph box="boxR" width="500" height="500"> | ||
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</jsxgraph> | </jsxgraph> | ||
| + | |||
| + | <jsxgraph box="box" width="500" height="500"> | ||
| + | var brd = JXG.JSXGraph.initBoard('box', {boundingbox: [-1.5, 1.5, 1.5, -1.5], axis:true}); | ||
| + | brd1.addChild(brd); | ||
| + | var ax = brd.create('line',[[0,0],[1,0]],{visible:false}); | ||
| + | var ay = brd.create('line',[[0,0],[0,1]],{visible:false}); | ||
| + | |||
| + | var p0 = brd.create('point',[0,0],{fixed:true,visible:false}); | ||
| + | var p1 = brd.create('point',[1,0],{name:'',visible:false,fixed:true}); | ||
| + | var c = brd.create('circle',[p0,p1],{dash:2,strokeWidth:1,strokeOpacity:0.6}); | ||
| + | |||
| + | |||
| + | var p2 = brd.create('point',[Math.cos(x.X()),Math.sin(x.X())],{name:'exp(ix)',fixed:true,size:1, strokeColor:'green'}); | ||
| + | |||
| + | var p3 = brd.create('point',[function(){return p2.X();},0.0],{visible:false,name:'',withLabel:false}); | ||
| + | var p4 = brd.create('point',[0.0,function(){return p2.Y();}],{visible:false,name:'',withLabel:false}); | ||
| + | |||
| + | brd.create('line',[p2,p4],{straightFirst:false,straightLast:false,strokeColor:'red'}); // cos | ||
| + | brd.create('text',[ | ||
| + | function(){return (p2.X()+p4.X())*0.3;}, | ||
| + | function(){return p2.Y()+0.05;}, | ||
| + | 'cos'],{}); | ||
| + | |||
| + | |||
| + | |||
| + | </jsxgraph> | ||
| + | |||
[[Category:Contributions]] | [[Category:Contributions]] | ||
