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 90-arctan(0.1*5)-arctan(0.2*5)-arctan(012*5)+arctan(2*5) 的值.
题型:数学计算
解:
90-arctan(0.1*5)-arctan(0.2*5)-arctan(012*5)+arctan(2*5)
=90-arctan0.5-arctan(0.2*5)-arctan(012*5)+arctan(2*5)
=90-arctan0.5-arctan1-arctan(012*5)+arctan(2*5)
=90-arctan0.5-arctan1-arctan60+arctan(2*5)
=90-arctan0.5-arctan1-arctan60+arctan10
=90-0.463648-arctan1-arctan60+arctan10
=90-0.463648-0.785398-arctan60+arctan10
=90-0.463648-0.785398-1.554131+arctan10
=90-0.463648-0.785398-1.554131+1.471128
=89.536352-0.785398-1.554131+1.471128
=88.750954-1.554131+1.471128
=87.196823+1.471128
=88.667951 答案:90-arctan(0.1*5)-arctan(0.2*5)-arctan(012*5)+arctan(2*5)=88.667951 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!