1.

If the vectors \[6\mathbf{i}-2\mathbf{j}+3\mathbf{k},\,\,2\mathbf{i}+3\mathbf{j}-6\mathbf{k}\] and \[3\mathbf{i}+6\mathbf{j}-2\mathbf{k}\] form a triangle, then it is                              [Karnataka CET 1999]

A. Right angled         
B. Obtuse angled
C. Equilteral               
D. Isosceles
Answer» C. Equilteral               


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