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

[1/1 Formula]
    Work: Calculate the value of equation arccos(3/5) .
    Question type: Mathematical calculation
    Solution:
          arccos(3/5)
        =arccos0.6
        =0.927295
    Answer:arccos(3/5)=0.927295
    Note: Radian

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