Let →a,→c be unit vectors and |→b|=4. The angle between →a and – InterviewSolution

1.	Let →a,→c be unit vectors and \|→b\|=4. The angle between →a and →c is cos−1(14). Then the positive integral value of λ such that →b−2→c=λ→a is ___
Answer» Let $\to a, \to c$ be unit vectors and $\| \to b \| = 4$ . The angle between $\to a a n d \to c$ is ${c o s}^{- 1} (\frac{1}{4})$ . Then the positive integral value of $λ$ such that $\to b - 2 \to c = λ \to a$ is ___

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