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Mathematical calculation:
    Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
    It supports mathematical functions (including trigonometric functions).
    Current location:Mathematical operation > History of Mathematical Computation > Answer
    Overview: 1 questions will be solved this time.Among them
           ☆1 arithmetic calculations

[1/1 Formula]
    Work: Calculate the value of equation 180+arctan(0.4*3.9)-90-arctan(0.2*3.9)-arctan(0.5*3.9)-arctan(0.08*3.9) .
    Question type: Mathematical calculation
    Solution:
          180+arctan(0.4*3.9)-90-arctan(0.2*3.9)-arctan(0.5*3.9)-arctan(0.08*3.9)
        =180+arctan1.56-90-arctan(0.2*3.9)-arctan(0.5*3.9)-arctan(0.08*3.9)
        =180+arctan1.56-90-arctan0.78-arctan(0.5*3.9)-arctan(0.08*3.9)
        =180+arctan1.56-90-arctan0.78-arctan1.95-arctan(0.08*3.9)
        =180+arctan1.56-90-arctan0.78-arctan1.95-arctan0.312
        =180+1.000756-90-arctan0.78-arctan1.95-arctan0.312
        =180+1.000756-90-0.662426-arctan1.95-arctan0.312
        =180+1.000756-90-0.662426-1.096945-arctan0.312
        =180+1.000756-90-0.662426-1.096945-0.302429
        =181.000756-90-0.662426-1.096945-0.302429
        =91.000756-0.662426-1.096945-0.302429
        =90.33833-1.096945-0.302429
        =89.241385-0.302429
        =88.938956

    Answer:180+arctan(0.4*3.9)-90-arctan(0.2*3.9)-arctan(0.5*3.9)-arctan(0.08*3.9)=88.938956
    Note: Radian


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