一道英文数学题a boy sitting on top of a 7 m tree can see a tower, w
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一道英文数学题
a boy sitting on top of a 7 m tree can see a tower, with an angle of elevation 73° to the top of the tower and an angle of depression 34° to the base of the tower. how high is the tower? 求解题过程和结果 谢谢
a boy sitting on top of a 7 m tree can see a tower, with an angle of elevation 73° to the top of the tower and an angle of depression 34° to the base of the tower. how high is the tower? 求解题过程和结果 谢谢
![一道英文数学题a boy sitting on top of a 7 m tree can see a tower, w](/uploads/image/z/11270355-51-5.jpg?t=%E4%B8%80%E9%81%93%E8%8B%B1%E6%96%87%E6%95%B0%E5%AD%A6%E9%A2%98a+boy+sitting+on+top+of+a+7+m+tree+can+see+a+tower%2C+w)
这是过程加结果~看在我这么勤勤恳恳的份儿上~您还是给点奖励吧:D![](http://img.wesiedu.com/upload/d/4c/d4c2249a43f9f024aee5c8291fb02fe2.jpg)
![](http://img.wesiedu.com/upload/d/4c/d4c2249a43f9f024aee5c8291fb02fe2.jpg)
一道英文数学题a boy sitting on top of a 7 m tree can see a tower, w
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