90-arctan(0.1*7.51)-arctan(0.2*7.51)-arctan(33.3*7.51)-arctan(0.1125*7.51)+arctan(3.33*7.51)+arctan(0.1598*7.51)_ Mathematical calculation

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[1/1 Formula]
    Work: Calculate the value of equation 90-arctan(0.1*7.51)-arctan(0.2*7.51)-arctan(33.3*7.51)-arctan(0.1125*7.51)+arctan(3.33*7.51)+arctan(0.1598*7.51) .
    Question type: Mathematical calculation
    Solution:
          90-arctan(0.1*7.51)-arctan(0.2*7.51)-arctan(33.3*7.51)-arctan(0.1125*7.51)+arctan(3.33*7.51)+arctan(0.1598*7.51)
        =90-arctan0.751-arctan(0.2*7.51)-arctan(33.3*7.51)-arctan(0.1125*7.51)+arctan(3.33*7.51)+arctan(0.1598*7.51)
        =90-arctan0.751-arctan1.502-arctan(33.3*7.51)-arctan(0.1125*7.51)+arctan(3.33*7.51)+arctan(0.1598*7.51)
        =90-arctan0.751-arctan1.502-arctan250.083-arctan(0.1125*7.51)+arctan(3.33*7.51)+arctan(0.1598*7.51)
        =90-arctan0.751-arctan1.502-arctan250.083-arctan0.844875+arctan(3.33*7.51)+arctan(0.1598*7.51)
        =90-arctan0.751-arctan1.502-arctan250.083-arctan0.844875+arctan25.0083+arctan(0.1598*7.51)
        =90-arctan0.751-arctan1.502-arctan250.083-arctan0.844875+arctan25.0083+arctan1.200098
        =90-0.644141-arctan1.502-arctan250.083-arctan0.844875+arctan25.0083+arctan1.200098
        =90-0.644141-0.983409-arctan250.083-arctan0.844875+arctan25.0083+arctan1.200098
        =90-0.644141-0.983409-1.566798-arctan0.844875+arctan25.0083+arctan1.200098
        =90-0.644141-0.983409-1.566798-0.701511+arctan25.0083+arctan1.200098
        =90-0.644141-0.983409-1.566798-0.701511+1.530831+arctan1.200098
        =90-0.644141-0.983409-1.566798-0.701511+1.530831+0.876098
        =89.355859-0.983409-1.566798-0.701511+1.530831+0.876098
        =88.37245-1.566798-0.701511+1.530831+0.876098
        =86.805652-0.701511+1.530831+0.876098
        =86.104141+1.530831+0.876098
        =87.634972+0.876098
        =88.51107
    Answer:90-arctan(0.1*7.51)-arctan(0.2*7.51)-arctan(33.3*7.51)-arctan(0.1125*7.51)+arctan(3.33*7.51)+arctan(0.1598*7.51)=88.51107
    Note: Radian

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