title: Determine center point of an offset arc
body: <p>I am working on an algorithm which requires the coordinates for the center point of an offset arc. Dimensions available to find this are shown in the image below and the dimension required is labeled as X:
  <img src="https://i.stack.imgur.com/igIxV.jpg" alt="enter image description here">
  The point at the very left of the arc is a quadrant therefore, the arc center also 2.27 away from the line with a dimension of 3. The actual value of x in this example is 2.47 (rounded), this was found using CAD however, I am trying to find an mathematical relation for this.</p>
  
  <p>Also, please note that dimensions shown are just what are available and not necessarily what are needed to find the center point.</p>