梯形上底长250,斜度比例1:12,求梯形下底长
等腰梯形上底长250厘米,斜坡的比例为1:12.梯形高200厘米.求这个梯形的下底长和斜坡所对应角的读数?
人气:141 ℃ 时间:2020-06-03 09:13:29
解答
斜坡边长2400厘米,勾股可知底边长=开根号5720000+250=2641.652149
至于度数只能查表了!
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