Vectors in Two-dimensional
2009-05-10 12:17 am
Given that u and v are two non-zero vectors such that u+3v is perpendicular to 7u-5v,while 4v-u is perpendicular to 2v-7u.Find the angle between u and v.
回答 (1)
2009-05-10 3:34 am
✔ 最佳答案
The answer is as follows:圖片參考：http://i320.photobucket.com/albums/nn347/old-master/090509_1.jpg?t=1241868759
收錄日期: 2021-05-01 23:54:23
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090509000051KK01163