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Key terms: b sin angles spherical math arc triangle sides sphere circle law frac line plane sin b sum theorem length equals sin c spherical triangle polygon formula radius mathematics greek arc angle subtended spherical trigonometry napier excess surface great circle corner angle navigation pentagon menelaus overline special case mathematician identities law of sines law of cosines right spherical spherical geometry Search external links cited by footnotes on Wikipedia page Spherical trigonometry: |
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