Let →a,→b,→c are units vectors satisfying →a×(→b×→c)=(� – InterviewSolution

1.	Let →a,→b,→c are units vectors satisfying →a×(→b×→c)=(→a×→b)×→c. If →a and →c are not collinear and →a⋅→c=12, then \|→a+→b+→c\| equals
Answer» Let $\to a, \to b, \to c$ are units vectors satisfying $\to a \times (\to b \times \to c) = (\to a \times \to b) \times \to c .$ If $\to a$ and $\to c$ are not collinear and $\to a \cdot \to c = \frac{1}{2},$ then $\| \to a + \to b + \to c \|$ equals

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