Question

If we draw an arc, how can we get coordinates of arc’s end (last point) with respect to the center.

Answer 1

See http://jsfiddle.net/5DdQt/

Use

function getPoint(c1,c2,radius,angle){
    return [c1+Math.cos(angle)*radius,c2+Math.sin(angle)*radius];
}

• c1 and c2 are the coordinates of the center of the arc
• radius is the arc’s radius
• angle is the last point’s angle in radians.

Radians = (degrees * Math.PI) / 180.