Replies

1. 
   HammerHarry | Jan 13, 2008 03:30am | #1

   Off the top of my head, I'd do it the two step way - acos() will give you the radians, then use degree() to convert that to degrees.  But there's probably an easier way.

2. 
   Stuart | Jan 13, 2008 03:31am | #2

   Check in Excel help for the ACOS function.

   Returns the arccosine, or inverse cosine, of a number. The arccosine is the angle whose cosine is number. The returned angle is given in radians in the range 0 (zero) to pi.

   Syntax

   ACOS(number)

   Number   is the cosine of the angle you want and must be from -1 to 1.

   Remark

   If you want to convert the result from radians to degrees, multiply it by 180/PI() or use the DEGREES function.

   
   

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   Edited 1/12/2008 7:34 pm by Stuart

3. 
   smllr | Jan 13, 2008 03:32am | #3

   Check out the ACOS function.

   Steve M.