Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit Any help? Problem: I want to insert a formula into excel Using Calculator: XL & R = 2 Tan^ -1(XL / R ) = 45 Deg. Tan^-1 = ARC TAN Know if I try to put it into excel, I use: ATAN( XL / R ) =.785 I'm not getting my 45 Deg? Can someone tell me what I'm doing wrong? Thanks Rich ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu