In the figure, a triangular plane ABC leans against a vertical wall CD at C with A on the horizontal ground AD. It is given that A,B,C and D all lie on the same plane. E is a point on AD such that BE ⊥ AD. ∠CAD = 40° , ∠BAD = 25°, ∠BCD = 30° and BC = 50cm. Find BD.
Figure http://aycu21.webshots.com/image/38420/2001348733965970118_rs.jpg
math problem
2007-12-26 6:39 am
回答 (2)
2007-12-26 6:53 am
✔ 最佳答案
As follows: 圖片參考：http://aycu21.webshots.com/image/38420/2001348733965970118_rs.jpg
圖片參考：http://i238.photobucket.com/albums/ff245/chocolate328154/Maths074.jpg?t=1198594404
參考: My Maths Knowledge
2007-12-28 6:49 am
BD = 37.5cm
收錄日期: 2021-04-19 00:13:32
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