总述:本次共解1题。其中
☆算术计算1题
〖1/1算式〗
作业:求算式 2*1.2*1372*(0.7*2.9-0.287)-1.2*8.6/5.8*1.25*1.25*51.42*51.42*(sin2.5)*((2.9-0.287)*(2.9-0.287)/2*(cos2.5)+0.287*(2.9-0.287)) 的值.
题型:数学计算
解:
2*1.2*1372*(0.7*2.9-0.287)-1.2*8.6/5.8*1.25*1.25*51.42*51.42*(sin2.5)*((2.9-0.287)*(2.9-0.287)/2*(cos2.5)+0.287*(2.9-0.287))
=2*1.2*1372*1.743-1.2*8.6/5.8*1.25*1.25*51.42*51.42*(sin2.5)*((2.9-0.287)*(2.9-0.287)/2*(cos2.5)+0.287*(2.9-0.287))
=2*1.2*1372*1.743-1.2*8.6/5.8*1.25*1.25*51.42*51.42*0.598472*((2.9-0.287)*(2.9-0.287)/2*(cos2.5)+0.287*(2.9-0.287))
=2*1.2*1372*1.743-1.2*8.6/5.8*1.25*1.25*51.42*51.42*0.598472*(2.613*(2.9-0.287)/2*(cos2.5)+0.287*(2.9-0.287))
=2*1.2*1372*1.743-1.2*8.6/5.8*1.25*1.25*51.42*51.42*0.598472*(2.613*2.613/2*(cos2.5)+0.287*(2.9-0.287))
=2*1.2*1372*1.743-1.2*8.6/5.8*1.25*1.25*51.42*51.42*0.598472*(2.613*2.613/2*(-0.801144)+0.287*(2.9-0.287))
=2*1.2*1372*1.743-1.2*8.6/5.8*1.25*1.25*51.42*51.42*0.598472*(2.613*2.613/2*(-0.801144)+0.287*2.613)
=2*1.2*1372*1.743-1.2*8.6/5.8*1.25*1.25*51.42*51.42*0.598472*(-1.985082)
=2.4*1372*1.743-1.2*8.6/5.8*1.25*1.25*51.42*51.42*0.598472*(-1.985082)
=3292.8*1.743-1.2*8.6/5.8*1.25*1.25*51.42*51.42*0.598472*(-1.985082)
=5739.3504-1.2*8.6/5.8*1.25*1.25*51.42*51.42*0.598472*(-1.985082)
=5739.3504-10.32/5.8*1.25*1.25*51.42*51.42*0.598472*(-1.985082)
=5739.3504-1.77931*1.25*1.25*51.42*51.42*0.598472*(-1.985082)
=5739.3504-2.224137*1.25*51.42*51.42*0.598472*(-1.985082)
=5739.3504-2.780171*51.42*51.42*0.598472*(-1.985082)
=5739.3504-142.956393*51.42*0.598472*(-1.985082)
=5739.3504-7350.817728*0.598472*(-1.985082)
=5739.3504-4399.258587*(-1.985082)
=5739.3504-(-8732.889034)
=14472.239434 答案:2*1.2*1372*(0.7*2.9-0.287)-1.2*8.6/5.8*1.25*1.25*51.42*51.42*(sin2.5)*((2.9-0.287)*(2.9-0.287)/2*(cos2.5)+0.287*(2.9-0.287))=14472.239434 注:弧度制你的问题在这里没有得到解决?请到 热门难题 里面看看吧!