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Discussion :: Trigonometry

  1.  Determine the spherical excess of the spherical triangle ABC given a = 56°, b = 65°, and c = 78°.

    2. A.

    33°33’
    B.

    38°93’
    C.

    68°37’
    D.

    90°57’

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    Answer : Option C

    Explanation :

    68°37’

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