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see trigonometrytrigonometry
[Gr.,=measurement of triangles], a specialized area of geometry concerned with the properties of and relations among the parts of a triangle. Spherical trigonometry is concerned with the study of triangles on the surface of a sphere rather than in the plane; it is
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of an angle
a trigonometric function that in a right-angled triangle is the ratio of the length of the adjacent side to that of the hypotenuse; the sine of the complement


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References in periodicals archive ?
This scheme of the electrostatic system allows us to collect all the protons and to obtain zero average cosines of a and B correlations.
3] can be reached when all values: the average cosine of the A correlation coefficient cos([[sigma].
This generalization of the Pythagorean Formula is called The Law of Cosines.
3) Can the LSA cosine ranges be evaluative--indicating strong, medium, weak or minimal levels?