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☆算术计算1题
〖1/1算式〗
作业:求算式 90-arctan(4*7.5)-arctan(0.02*7.5)-arctan(0.02*7.5)+arctan(1*7.5) 的值.
题型:数学计算
解:
90-arctan(4*7.5)-arctan(0.02*7.5)-arctan(0.02*7.5)+arctan(1*7.5)
=90-arctan30-arctan(0.02*7.5)-arctan(0.02*7.5)+arctan(1*7.5)
=90-arctan30-arctan0.15-arctan(0.02*7.5)+arctan(1*7.5)
=90-arctan30-arctan0.15-arctan0.15+arctan(1*7.5)
=90-arctan30-arctan0.15-arctan0.15+arctan7.5
=90-1.537475-arctan0.15-arctan0.15+arctan7.5
=90-1.537475-0.14889-arctan0.15+arctan7.5
=90-1.537475-0.14889-0.14889+arctan7.5
=90-1.537475-0.14889-0.14889+1.438245
=88.462525-0.14889-0.14889+1.438245
=88.313635-0.14889+1.438245
=88.164745+1.438245
=89.60299 答案:90-arctan(4*7.5)-arctan(0.02*7.5)-arctan(0.02*7.5)+arctan(1*7.5)=89.60299 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!