设向量都单位向量,且满足,则

2021-04-14

答案：

D

0
设向量都单位向量,且满足,则:46364a5a011c11ffdeb598f2632fbf0a.png653adba49d80402b5c4b627147927915.png9b1f9c8d784d0100ac7d8cb4124f5cb6.png
1
设向量都单位向量,且满足,则:46364a5a011c11ffdeb598f2632fbf0a.png653adba49d80402b5c4b627147927915.png9b1f9c8d784d0100ac7d8cb4124f5cb6.png
2
设向量都单位向量,且满足,则:46364a5a011c11ffdeb598f2632fbf0a.png653adba49d80402b5c4b627147927915.png9b1f9c8d784d0100ac7d8cb4124f5cb6.png
3
已知向量,则与向量都垂直的单位向量是().7c7fe26d07ac5729c94364c546004230.png729098d4c342d82f29e51c8e62ccc578.png
4
向量与单位向量的夹角为，且，则射影向量=（）；如果则射影=（）5597fc04e4b0ec35e2d5b703.gifecd9cb015c1695c57f1b932da1b8877b.gif420eb5895d777d3005de335ca3d1ba87.gif056dbe9ed876de7af1eff725639c6117.gif1c1e9829e8c4543dd05f166a67a1b839.gif92262c682453ae3e5a1badd0b2e1e02e.gif1e91707a12e40

设向量￼都单位向量,且满足￼,则￼