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  1. spherical trigonometry

    • n.
      the branch of trigonometry concerned with the measurement of the angles and sides of spherical triangles.
    • noun: spherical trigonometry

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    • IPA[ˈsfi(ə)rəkəl]
    • n.
      the branch of trigonometry concerned with the measurement of the angles and sides of spherical ...

    Oxford American Dictionary