I suspect he's talking not about the reciprocal, but the inverse, sometimes
called ArcSin, i.e. given the sin value, return the angle.

On Fri, 25 Mar 2005 06:28:47 -0500, "Gary Brown"
wrote:

=1/SIN(A1)
HTH,
Gary Brown



"John Fitzpatrick" wrote in message
...
I need a formula that will allow me to calculate the inverse sin of a
number using excel. Its a structural engineering problem. Can anybody help
please.
John Fitzpatrick