# Relationships In A Spherical Triangle

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Illustration used to extend the law of cosines when finding the relation between the three sides and an angle of a spherical triangle. In this case angle b<90° and angle c>90°.

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Spheres### Source

George N. Bauer, PH.D. and W.E. Brooke, C.E., M.A. *Plane And Spherical Trigonometry* (Boston: D.C. Heath & Co., 1917) 130

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