If →a,→b,→c,→d are non-zero vectors satisfying →a=→b+→c, – InterviewSolution

1.	If →a,→b,→c,→d are non-zero vectors satisfying →a=→b+→c,→b×→d=→0 and →c⋅→d=0 , then →d×(→a×→d)\|→d\|2 is always equal to
Answer» If $\to a, \to b, \to c, \to d$ are non-zero vectors satisfying $\to a = \to b + \to c$ , $\to b \times \to d = \to 0$ and $\to c \cdot \to d = 0$ , then $\frac{\to d \times (\to a \times \to d)}{\| \to d \|^{2}}$ is always equal to

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