the angle of elevation of A from B is 40 degrees.
what is the angle of depression of Bfrom A???
the answer in my book is 40 but I think is 50
so which one is correct??
f.3 math urgent
2007-05-26 1:29 am
回答 (3)
2007-05-26 2:07 am
✔ 最佳答案
圖片參考：http://i169.photobucket.com/albums/u209/lautszki/07-05-05/altang.jpg
Let points C and D, where AC //DB,
∠CAB = ∠DBA (alt.∠s, AC //DB)
∴If ∠CAB = 40°,
then ∠DBA = 40°.
Thta is, the angle of elevation = the angle of depression
參考: ki
2007-05-26 1:35 am
is 40...
2007-05-25 17:50:41 補充：
........A.**********............*........40degree................*.............................*..............................*...................40degree....*.....................*************.Bhope u understand...i cant make a graph for u. sorry~
2007-05-25 17:50:41 補充：
........A.**********............*........40degree................*.............................*..............................*...................40degree....*.....................*************.Bhope u understand...i cant make a graph for u. sorry~
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