-90-arctan(0.1*6)-arctan(0.01*6)-arctan(6/0.375)-arctan(6/84.85)+arctan(6/3)+arctan(6/10.61) _ Mathematical calculation

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           ☆1 arithmetic calculations

[1/1 Formula]
    Work: Calculate the value of equation -90-arctan(0.1*6)-arctan(0.01*6)-arctan(6/0.375)-arctan(6/84.85)+arctan(6/3)+arctan(6/10.61) .
    Question type: Mathematical calculation
    Solution:
          -90-arctan(0.1*6)-arctan(0.01*6)-arctan(6/0.375)-arctan(6/84.85)+arctan(6/3)+arctan(6/10.61)
        =-90-arctan0.6-arctan(0.01*6)-arctan(6/0.375)-arctan(6/84.85)+arctan(6/3)+arctan(6/10.61)
        =-90-arctan0.6-arctan0.06-arctan(6/0.375)-arctan(6/84.85)+arctan(6/3)+arctan(6/10.61)
        =-90-arctan0.6-arctan0.06-arctan16-arctan(6/84.85)+arctan(6/3)+arctan(6/10.61)
        =-90-arctan0.6-arctan0.06-arctan16-arctan0.070713+arctan(6/3)+arctan(6/10.61)
        =-90-arctan0.6-arctan0.06-arctan16-arctan0.070713+arctan2+arctan(6/10.61)
        =-90-arctan0.6-arctan0.06-arctan16-arctan0.070713+arctan2+arctan0.565504
        =-90-0.54042-arctan0.06-arctan16-arctan0.070713+arctan2+arctan0.565504
        =-90-0.54042-0.059928-arctan16-arctan0.070713+arctan2+arctan0.565504
        =-90-0.54042-0.059928-1.508378-arctan0.070713+arctan2+arctan0.565504
        =-90-0.54042-0.059928-1.508378-0.070595+arctan2+arctan0.565504
        =-90-0.54042-0.059928-1.508378-0.070595+1.107149+arctan0.565504
        =-90-0.54042-0.059928-1.508378-0.070595+1.107149+0.514669
        =-90.54042-0.059928-1.508378-0.070595+1.107149+0.514669
        =-90.600348-1.508378-0.070595+1.107149+0.514669
        =-92.108726-0.070595+1.107149+0.514669
        =-92.179321+1.107149+0.514669
        =-91.072172+0.514669
        =-90.557503
    Answer:-90-arctan(0.1*6)-arctan(0.01*6)-arctan(6/0.375)-arctan(6/84.85)+arctan(6/3)+arctan(6/10.61)=-90.557503
    Note: Radian

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