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Math Help - Locus

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    Locus

    What is the locus of all points from which a given segment a is seen at a given angle A? It has a name?
    In spanish it is the "arco capaz" and in french "arc capable". What about english?
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  2. #2
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    Quote Originally Posted by mercedes View Post
    What is the locus of all points from which a given segment a is seen at a given angle A? It has a name?
    In spanish it is the "arco capaz" and in french "arc capable". What about english?
    Hi mercedes.

    I found the article Arco capaz on the Spanish Wikipedia site, and from what I understand, an arco capaz is the locus of all points P from two distinct fixed points A and B such that the angle APB is a fixed angle.

    I don’t think there is a special name for this arc in English. Clearly the locus is an arc of a circle, so we just call it that in English. If the arc is smaller than a semicircle (i.e. if \angle\,\mbox{APB} is greater than 90) it is called a minor arc; if it is larger than a semicircle (i.e. the fixed angle is acute) it is called a major arc.

    Espero que esto te ayude.
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