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Re: Request for simple trig formula
From: Mitch B Burrill
Date: 2003 Apr 15, 09:29 -0400
From: Mitch B Burrill
Date: 2003 Apr 15, 09:29 -0400
take both ratios of the two smaller sides (like, a/b and b/a), the angles are the inverse tangents (atan) of these two numbers. -----Original Message----- From: David Weilacher [mailto:daveweilacher@EARTHLINK.NET] Sent: Tuesday, April 15, 2003 6:04 AM To: NAVIGATION-L@LISTSERV.WEBKAHUNA.COM Subject: Request for simple trig formula I need a favor. I don't recall the simple trig formulas and don't have the mental where-with-all to find anything using a search engine. I think it is because my mind just doesn't index the way they do. If I know the lengths of 3 sides of a triangle and one angle (90), how do I determine the two remaining angles. I do own a fancy calculator capable of sin, cos stuff. What I would like to come away with are the side-angle-side, angle-side-angle, and side-side-side formulas so that I can write them down in my address book for future reference. Thank you. PS: I am attempting to solve a problem indirectly related to navigation. Dave Weilacher .US Coast Guard licensed captain . #889968 .ASA instructor evaluator and celestial . navigation instructor #990800 .IBM AS400 RPG contract programmer