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〖1/1算式〗
    作业：求算式 1191.67*sin(180*0.41)+1573*0.41*(2*π*0.41-sin(360*0.41))*(sin(180*0.41)+sin(180*0.42))/(2*π*0.41*0.42) 的值.
    题型：数学计算
    解:
          1191.67*sin(180*0.41)+1573*0.41*(2*π*0.41-sin(360*0.41))*(sin(180*0.41)+sin(180*0.42))/(2*π*0.41*0.42)
        =1191.67*sin73.8+1573*0.41*(2*π*0.41-sin(360*0.41))*(sin(180*0.41)+sin(180*0.42))/(2*π*0.41*0.42)
        =1191.67*sin73.8+1573*0.41*(2*π*0.41-sin147.6)*(sin(180*0.41)+sin(180*0.42))/(2*π*0.41*0.42)
        =1191.67*sin73.8+1573*0.41*2.521279*(sin(180*0.41)+sin(180*0.42))/(2*π*0.41*0.42)
        =1191.67*sin73.8+1573*0.41*2.521279*(sin73.8+sin(180*0.42))/(2*π*0.41*0.42)
        =1191.67*sin73.8+1573*0.41*2.521279*(sin73.8+sin75.6)/(2*π*0.41*0.42)
        =1191.67*sin73.8+1573*0.41*2.521279*(-0.799214)/(2*π*0.41*0.42)
        =1191.67*sin73.8+1573*0.41*2.521279*(-0.799214)/1.081965
        =1191.67*-0.999624+1573*0.41*2.521279*-0.799214/1.081965
        =-1191.221932+1573*0.41*2.521279*(-0.799214)/1.081965
        =-1191.221932+644.93*2.521279*(-0.799214)/1.081965
        =-1191.221932+1626.048465*(-0.799214)/1.081965
        =-1191.221932+(-1299.560698)/1.081965
        =-1191.221932+(-1201.111587)
        =-2392.333519
    答案:1191.67*sin(180*0.41)+1573*0.41*(2*π*0.41-sin(360*0.41))*(sin(180*0.41)+sin(180*0.42))/(2*π*0.41*0.42)=-2392.333519
    注：弧度制

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