Overview: 1 questions will be solved this time.Among them
           ☆1 arithmetic calculations

[1/1 Formula]
    Work: Calculate the value of equation arctan(5/4) .
    Question type: Mathematical calculation
    Solution:
          arctan(5/4)
        =arctan1.25
        =0.896055
    Answer:arctan(5/4)=0.896055
    Note: Radian

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