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 arctan(30/2)+arctan(30/6)-arctan(30/12)-arctan(30/60)-arctan(30/80) 的值.
题型:数学计算
解:
arctan(30/2)+arctan(30/6)-arctan(30/12)-arctan(30/60)-arctan(30/80)
=arctan15+arctan(30/6)-arctan(30/12)-arctan(30/60)-arctan(30/80)
=arctan15+arctan5-arctan(30/12)-arctan(30/60)-arctan(30/80)
=arctan15+arctan5-arctan2.5-arctan(30/60)-arctan(30/80)
=arctan15+arctan5-arctan2.5-arctan0.5-arctan(30/80)
=arctan15+arctan5-arctan2.5-arctan0.5-arctan0.375
=1.504228+arctan5-arctan2.5-arctan0.5-arctan0.375
=1.504228+1.373401-arctan2.5-arctan0.5-arctan0.375
=1.504228+1.373401-1.19029-arctan0.5-arctan0.375
=1.504228+1.373401-1.19029-0.463648-arctan0.375
=1.504228+1.373401-1.19029-0.463648-0.358771
=2.877629-1.19029-0.463648-0.358771
=1.687339-0.463648-0.358771
=1.223691-0.358771
=0.86492 答案:arctan(30/2)+arctan(30/6)-arctan(30/12)-arctan(30/60)-arctan(30/80)=0.86492 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!