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Re: Need formulas for arcsin and arctan
From: Frank Reed CT
Date: 2006 Mar 30, 02:33 EST
From: Frank Reed CT
Date: 2006 Mar 30, 02:33 EST
Bill you wrote: "For example, several decades ago--unless you could walk or stand on water--you could not walk or stand on a "dock." (Hence the term "dry dock"). Gourmet was a noun, not an adjective. Was arcsine exclusively refering to angle in radians, and is that the case or not today?" My opinion: no and no. I don't think that this term was ever limited semantically in the way you suggest. In any case, it isn't today. So if someone asks me for the "arcsine" or the "inverse sine" or "sin^-1" of some number, e.g. 0.7071068, I can answer "45 degrees" or "pi/4". Both are correct in today's usage and, I believe, have been for a long time. Naturally, a mathematician will be more likely to reply with the angle as a pure number (sometimes called "radians") while an engineer may be more likely to reply in degrees. -FER 42.0N 87.7W, or 41.4N 72.1W. www.HistoricalAtlas.com/lunars
