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☆算术计算1题
〖1/1算式〗
作业:求算式 arctan(17.9*0.55)-90-arctan(137.4*0.55)-arctan(0.55)-arctan(0.5*0.55) 的值.
题型:数学计算
解:
arctan(17.9*0.55)-90-arctan(137.4*0.55)-arctan(0.55)-arctan(0.5*0.55)
=arctan9.845-90-arctan(137.4*0.55)-arctan(0.55)-arctan(0.5*0.55)
=arctan9.845-90-arctan75.57-arctan(0.55)-arctan(0.5*0.55)
=arctan9.845-90-arctan75.57-arctan0.55-arctan(0.5*0.55)
=arctan9.845-90-arctan75.57-arctan0.55-arctan0.275
=1.469569-90-arctan75.57-arctan0.55-arctan0.275
=1.469569-90-1.557564-arctan0.55-arctan0.275
=1.469569-90-1.557564-0.502843-arctan0.275
=1.469569-90-1.557564-0.502843-0.268366
=-88.530431-1.557564-0.502843-0.268366
=-90.087995-0.502843-0.268366
=-90.590838-0.268366
=-90.859204 答案:arctan(17.9*0.55)-90-arctan(137.4*0.55)-arctan(0.55)-arctan(0.5*0.55)=-90.859204 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!