Mathematics
         
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Mathematical calculation:
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           ☆1 arithmetic calculations

[1/1 Formula]
    Work: Calculate the value of equation -90-arctan(sqrt12)-arctan(1/4*sqrt12) .
    Question type: Mathematical calculation
    Solution:
          -90-arctan(sqrt12)-arctan(1/4*sqrt12)
        =-90-arctan3.464102-arctan(1/4*sqrt12)
        =-90-arctan3.464102-arctan0.866026
        =-90-1.289761-arctan0.866026
        =-90-1.289761-0.713725
        =-91.289761-0.713725
        =-92.003486

    Answer:-90-arctan(sqrt12)-arctan(1/4*sqrt12)=-92.003486
    Note: Radian


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