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[1/1 Formula]
    Work: Calculate the value of equation 180-90-arctan(0.5*1.28)-arctan(0.125*1.28) .
    Question type: Mathematical calculation
    Solution:
          180-90-arctan(0.5*1.28)-arctan(0.125*1.28)
        =180-90-arctan0.64-arctan(0.125*1.28)
        =180-90-arctan0.64-arctan0.16
        =180-90-0.569313-arctan0.16
        =180-90-0.569313-0.158655
        =90-0.569313-0.158655
        =89.430687-0.158655
        =89.272032
    Answer:180-90-arctan(0.5*1.28)-arctan(0.125*1.28)=89.272032
    Note: Radian

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