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           ☆1 arithmetic calculations

[1/1 Formula]
    Work: Calculate the value of equation -2.5*cos53.72*cos34.07+2.5*cos34.07*sin53.72 .
    Question type: Mathematical calculation
    Solution:
          -2.5*cos53.72*cos34.07+2.5*cos34.07*sin53.72
        =-2.5*-0.951437*cos34.07+2.5*cos34.07*sin53.72
        =-2.5*-0.951437*-0.883498+2.5*cos34.07*sin53.72
        =-2.5*-0.951437*-0.883498+2.5*-0.883498*sin53.72
        =-2.5*-0.951437*-0.883498+2.5*-0.883498*-0.307843
        =2.378592*(-0.883498)+2.5*(-0.883498)*(-0.307843)
        =(-2.101481)+2.5*(-0.883498)*(-0.307843)
        =-2.101481+(-2.208745)*(-0.307843)
        =-2.101481+0.679947
        =-1.421534

    Answer:-2.5*cos53.72*cos34.07+2.5*cos34.07*sin53.72=-1.421534
    Note: Radian


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