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☆算术计算1题
〖1/1算式〗
作业:求算式 90-arctan(0.2*2.19)-arctan(0.0625*2.19)+arctan(4.8*2.19)-arctan(80*2.19) 的值.
题型:数学计算
解:
90-arctan(0.2*2.19)-arctan(0.0625*2.19)+arctan(4.8*2.19)-arctan(80*2.19)
=90-arctan0.438-arctan(0.0625*2.19)+arctan(4.8*2.19)-arctan(80*2.19)
=90-arctan0.438-arctan0.136875+arctan(4.8*2.19)-arctan(80*2.19)
=90-arctan0.438-arctan0.136875+arctan10.512-arctan(80*2.19)
=90-arctan0.438-arctan0.136875+arctan10.512-arctan175.2
=90-0.41283-arctan0.136875+arctan10.512-arctan175.2
=90-0.41283-0.13603+arctan10.512-arctan175.2
=90-0.41283-0.13603+1.475952-arctan175.2
=90-0.41283-0.13603+1.475952-1.565089
=89.58717-0.13603+1.475952-1.565089
=89.45114+1.475952-1.565089
=90.927092-1.565089
=89.362003 答案:90-arctan(0.2*2.19)-arctan(0.0625*2.19)+arctan(4.8*2.19)-arctan(80*2.19)=89.362003 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!