If a- b- c- are any three vectors such that a-b- -c- a-b- -c-0 then a-b- -c- is

The correct option is A 0⃗ (a b).c =a.c bc =0 Hence a.c=b.c Now c×(a×b) = [a(c.b) b(c).(a)] = [a(c.b) b(b).(c)] =0 ...

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Definition of Vector

If a⃗, b⃗, ...

Question

If $\to a, \to b, \to c$ are any three vectors such that $(\to a + \to b) . \to c = (\to a - \to b) . \to c = 0$ then $(\to a \times \to b) \times \to c$ is

\to 0

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\to a

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\to b

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none of these

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