title: How to calculate/define ArcSin function in VBA?
body: <p>How to implement the VBA code of the arcsin function (defined below)?</p>
  <p><strong>Definition</strong>: The arcsin function is the inverse of the sine function. It returns the angle whose sine is a given number. For every trigonometry function, there is an inverse function that works in reverse. These inverse functions have the same name but with 'arc' in front. (On some calculators the arcsin button may be labelled asin, or sometimes sin-1.) So the inverse of sin is arcsin etc. When we see &quot;arcsin A&quot;, we understand it as &quot;the angle whose sin is A&quot;</p>
  <blockquote>
  <p>sin30 = 0.5   Means: The sine of 30 degrees is 0.5</p>
  <p>arcsin 0.5 = 30   Means: The angle whose sin is 0.5 is 30 degrees.</p>
  </blockquote>