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设,且、夹角120°,则=________.
相关试题
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已知非零向量,,满足++=0,向量与夹角为120°,且||=2||,则向量与的夹角为( )
A.60°
B.90°
C.120°
D.150°
-
已知非零向量,,满足++=0,向量与夹角为120°,且||=2||,则向量与的夹角为( )
A.60°
B.90°
C.120°
D.150°
-
已知非零向量,,满足++=0,向量与夹角为120°,且||=2||,则向量与的夹角为( )
A.60°
B.90°
C.120°
D.150°
-
已知非零向量,,满足++=0,向量与夹角为120°,且||=2||,则向量与的夹角为( )
A.60°
B.90°
C.120°
D.150°
-
已知非零向量,,满足++=0,向量与夹角为120°,且||=2||,则向量与的夹角为( )
A.60°
B.90°
C.120°
D.150°
-
已知非零向量,,满足++=0,向量与夹角为120°,且||=2||,则向量与的夹角为( )
A.60°
B.90°
C.120°
D.150°
-
已知非零向量,,满足++=0,向量与夹角为120°,且||=2||,则向量与的夹角为( )
A.60°
B.90°
C.120°
D.150°
-
已知非零向量,,满足++=0,向量与夹角为120°,且||=2||,则向量与的夹角为( )
A.60°
B.90°
C.120°
D.150°
-
已知非零向量,,满足++=0,向量与夹角为120°,且||=2||,则向量与的夹角为( )
A.60°
B.90°
C.120°
D.150°
-
已知非零向量,,满足++=0,向量与夹角为120°,且||=2||,则向量与的夹角为( )
A.60°
B.90°
C.120°
D.150°