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[請問] 數學:已知3夾角求向量 (感恩)
Oct 19th 2013, 04:54, by hajimez

作者hajimez ()

站內ask

標題[請問] 數學:已知3夾角求向量 (感恩<(_ _)>)

時間Sat Oct 19 04:54:02 2013

這題看似簡單但想破頭還是想不出來... 到現在已經n個小時了QQ 網路上也找了很久,但都沒有看到相關答案 問題如附圖(希望我沒有畫得看不懂): 三個空間中的向量(非平面),其中兩個已知一個未知,但三者互相之間的夾角已知, 求未知的那個向量。 https://www.dropbox.com/s/eixk2drf52m5qx9/3vectors-06.jpg
需要用到旋轉矩陣之類的嗎? 複雜也沒關係,我只需要結果是對的就好(例如以x=? y=? z=? ) 救命之恩無以回報,只能用約一半財產p幣5000聊表心意。 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 36.224.169.29 ※ 編輯: hajimez 來自: 36.224.169.29 (10/19 04:55) hajimez:轉錄至看板 Math 10/19 04:58

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