题目来源
题目来源1 : 2020年GRE数学新800题
正确率：58%
难度：5
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The figure shows part of the frame of an office building under construction, where points P, Q, and R are located on the frame at different heights and Q is 8.4 meters directly above P. The line of vision through Q and R makes an angle of 30 degrees with the upper horizontal floor, represented by line segment QS, and the line of vision through P and R makes an angle of 60 degrees with the lower horizontal floor, represented by line segment PT. What is the height of R, in meters, above the lower floor?
12.6 显示答案
· 相关考点
4.3.11 全等与相似三角形考察角度五：相似三角形应用题
以上解析由 考满分老师提供。
