Definition of spherical trigonometry
: trigonometry applied to spherical triangles and polygons
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“Spherical trigonometry.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spherical%20trigonometry. Accessed 19 May. 2022.
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Time Traveler for spherical trigonometry
The first known use of spherical trigonometry was circa 1728
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