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〖1/1算式〗
作业:求算式 -90+arctan(0.78*14.65)-arctan(0.2*0.78)-arctan(0.5*0.78)-arctan(0.78*172.39) 的值.
题型:数学计算
解:
-90+arctan(0.78*14.65)-arctan(0.2*0.78)-arctan(0.5*0.78)-arctan(0.78*172.39)
=-90+arctan11.427-arctan(0.2*0.78)-arctan(0.5*0.78)-arctan(0.78*172.39)
=-90+arctan11.427-arctan0.156-arctan(0.5*0.78)-arctan(0.78*172.39)
=-90+arctan11.427-arctan0.156-arctan0.39-arctan(0.78*172.39)
=-90+arctan11.427-arctan0.156-arctan0.39-arctan134.4642
=-90+1.483507-arctan0.156-arctan0.39-arctan134.4642
=-90+1.483507-0.154753-arctan0.39-arctan134.4642
=-90+1.483507-0.154753-0.371856-arctan134.4642
=-90+1.483507-0.154753-0.371856-1.56336
=-88.516493-0.154753-0.371856-1.56336
=-88.671246-0.371856-1.56336
=-89.043102-1.56336
=-90.606462 答案:-90+arctan(0.78*14.65)-arctan(0.2*0.78)-arctan(0.5*0.78)-arctan(0.78*172.39)=-90.606462 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!