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    Re: Need formulas for arcsin and arctan
    From: Bill B
    Date: 2006 Mar 28, 01:54 -0500

    > Finally, since arcsine(x) is simply "the angle whose sine is x" scanning
    > down a conventional table of sines will easily give you the answer to a
    > degree...
    
    Exposing my ignorance (again), arcsine is a bit confusing to me.  Every
    definition I find in my (old) reference books relates it to an angle in
    radians.
    
    As an analogy, "font" had a specific meeting prior to the computer.  It
    meant not only a font "family" bit a specific size, weight, slant,
    compressions or expansion, designer or foundry etc..  12 pt Caslon No. 540
    Italic was one font, 14 pt Caslon No. 540 Italic another font, as was 36
    point Bodoni Campanile (Ludlow).  Now "font" is a very loose description,
    tied mostly to the intellectual-property laws.
    
    So my question, is/was "arcsine" a term that applied only to "the angle
    whose sine is x," in radians, while sin^-1 can apply to whatever system
    (degrees, rads, grads) one is working in?
    
    Thanks
    
    Bill
    
    
    

       
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