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作业:求算式 90+arctan(13.77*0.71)-arctan(0.2*0.71)-arctan(0.71)-arctan(81*0.71) 的值.
题型:数学计算
解:
90+arctan(13.77*0.71)-arctan(0.2*0.71)-arctan(0.71)-arctan(81*0.71)
=90+arctan9.7767-arctan(0.2*0.71)-arctan(0.71)-arctan(81*0.71)
=90+arctan9.7767-arctan0.142-arctan(0.71)-arctan(81*0.71)
=90+arctan9.7767-arctan0.142-arctan0.71-arctan(81*0.71)
=90+arctan9.7767-arctan0.142-arctan0.71-arctan57.51
=90+1.468867-arctan0.142-arctan0.71-arctan57.51
=90+1.468867-0.141057-arctan0.71-arctan57.51
=90+1.468867-0.141057-0.617406-arctan57.51
=90+1.468867-0.141057-0.617406-1.55341
=91.468867-0.141057-0.617406-1.55341
=91.32781-0.617406-1.55341
=90.710404-1.55341
=89.156994 答案:90+arctan(13.77*0.71)-arctan(0.2*0.71)-arctan(0.71)-arctan(81*0.71)=89.156994 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!