Difference between revisions of "Trigonometric functions"

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Line 11: Line 11:
 
var p4 = brd.createElement('point',[0.0,function(){return p2.Y();}],{visible:false,name:'',withLabel:false});
 
var p4 = brd.createElement('point',[0.0,function(){return p2.Y();}],{visible:false,name:'',withLabel:false});
  
brd.createElement('line',[p0,p2],{straightFirst:false,straightLast:false,strokeColor:'black'});
+
brd.createElement('line',[p0,p2],{straightFirst:false,straightLast:false,strokeColor:'black'});   // Hypotenuse
brd.createElement('line',[p2,p3],{straightFirst:false,straightLast:false,strokeColor:'red'});
+
brd.createElement('line',[p2,p3],{straightFirst:false,straightLast:false,strokeColor:'red'});     // sin
brd.createElement('line',[p2,p4],{straightFirst:false,straightLast:false,strokeColor:'red'});
+
brd.createElement('line',[p2,p4],{straightFirst:false,straightLast:false,strokeColor:'red'});     // cos
  
 
var t = brd.createElement('tangent',[p2],{visible:false});
 
var t = brd.createElement('tangent',[p2],{visible:false});
 
var p5 = brd.createElement('point',[brd.intersectionFunc(t,ax,0)],{visible:false,name:'',withLabel:false});
 
var p5 = brd.createElement('point',[brd.intersectionFunc(t,ax,0)],{visible:false,name:'',withLabel:false});
 
var p6 = brd.createElement('point',[brd.intersectionFunc(t,ay,0)],{visible:false,name:'',withLabel:false});
 
var p6 = brd.createElement('point',[brd.intersectionFunc(t,ay,0)],{visible:false,name:'',withLabel:false});
brd.createElement('line',[p5,p6],{straightFirst:false,straightLast:false});
+
brd.createElement('line',[p5,p6],{straightFirst:false,straightLast:false});                       // tan + cot
  
brd.createElement('line',[p0,p6],{straightFirst:false,straightLast:false,strokeColor:'green'});
+
brd.createElement('line',[p0,p6],{straightFirst:false,straightLast:false,strokeColor:'green'});   // csc
brd.createElement('line',[p0,p5],{straightFirst:false,straightLast:false,strokeColor:'green'});
+
brd.createElement('line',[p0,p5],{straightFirst:false,straightLast:false,strokeColor:'green'});   // sec
  
 
brd.createElement('text',[
 
brd.createElement('text',[
         function(){return (p0.X()+p2.x())*0.5;},
+
         function(){return (p0.X()+p2.X())*0.5;},
         function(){return (p0.X()+p2.x())*0.5;},
+
         function(){return (p0.Y()+p2.Y())*0.5;},
 
         '1'],{});
 
         '1'],{});
 +
 +
brd.createElement('text',[
 +
        function(){return (p0.X()+p4.X())*0.5;},
 +
        function(){return (p0.Y()+p4.Y())*0.5;},
 +
        'cos'],{});
 +
  
  

Revision as of 17:13, 11 June 2009