| javascript Programming Glossary: math.atan2How to calculate the latlng of a point a certain distance away from another? http://stackoverflow.com/questions/2637023/how-to-calculate-the-latlng-of-a-point-a-certain-distance-away-from-another   Math.cos lat1 Math.sin dist Math.cos brng var lon2 lon1 Math.atan2 Math.sin brng Math.sin dist   Math.cos lat1   Math.cos dist..   Math.cos lat1 Math.sin dist Math.cos brng var lon2 lon1 Math.atan2 Math.sin brng Math.sin dist   Math.cos lat1   Math.cos dist.. 
 How to add markers on Google Maps polylines based on distance along the line? http://stackoverflow.com/questions/2698112/how-to-add-markers-on-google-maps-polylines-based-on-distance-along-the-line  Find the bearing from this point to the next. var brng Math.atan2 Math.sin dLon Math.cos lat2  Math.cos lat1 Math.sin lat2  Math.sin..  Math.cos lat1 Math.sin angDist  Math.cos brng lon2 lon1 Math.atan2 Math.sin brng Math.sin angDist   Math.cos lat1   Math.cos angDist.. Find the bearing from this point to the next. var brng Math.atan2 Math.sin dLon Math.cos lat2  Math.cos lat1 Math.sin lat2   Math.sin.. 
 Baking transforms into SVG Path Element commands http://stackoverflow.com/questions/5149301/baking-transforms-into-svg-path-element-commands  Extract rotation and scale from the transform var rotation Math.atan2 transform.b transform.d 180 Math.PI var sx Math.sqrt transform.a.. K A2 0.5 A C K ac C2 0.5 A C K ac a_offsetrot 0.5 Math.atan2 B ac  This can get slightly below zero due to rounding issues... 
 toRad() javascript function throwing error http://stackoverflow.com/questions/5260423/torad-javascript-function-throwing-error  lat2.toRad Math.sin dLon 2 Math.sin dLon 2 var c 2 Math.atan2 Math.sqrt a Math.sqrt 1 a var d R c Distance in km But when.. 
 Google Maps Polyline: Mark the two Polyline coordinates that contain the clicked LatLng http://stackoverflow.com/questions/5457937/google-maps-polyline-mark-the-two-polyline-coordinates-that-contain-the-clicked  lat2.toRad Math.sin dLon 2 Math.sin dLon 2 var c 2 Math.atan2 Math.sqrt a Math.sqrt 1 a var d R c return parseFloat d function.. 
 Differentiating +0 and -0 http://stackoverflow.com/questions/7223717/differentiating-0-and-0  some kind of hack but a look at the specs suggests this Math.atan2 0 0 Math.PI true Math.atan2 0 0 0 true   share improve this.. 
 Javascript IOS5 “JavaScript execution exceeded timeout” http://stackoverflow.com/questions/7787219/javascript-ios5-javascript-execution-exceeded-timeout  lat2.toRad Math.sin dLon 2 Math.sin dLon 2 var c 2 Math.atan2 Math.sqrt a Math.sqrt 1 a var d R c return d function test var.. 
 How does one rotate a HTML canvas object around a fixed point using mouse action? http://stackoverflow.com/questions/7873470/how-does-one-rotate-a-html-canvas-object-around-a-fixed-point-using-mouse-action  you can calculate this by using the following var angle Math.atan2 y2 y1 x2 x1 180 Math.PI alter the angle to be relative to Y.. 
 Draw arrow on canvas tag http://stackoverflow.com/questions/808826/draw-arrow-on-canvas-tag  tox toy var headlen 10 length of head in pixels var angle Math.atan2 toy fromy tox fromx context.moveTo fromx fromy context.lineTo.. 
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