→a and →b are two vectors such that |→a|=1, |→b|=4, |→c|2=19 – InterviewSolution

1.	→a and →b are two vectors such that \|→a\|=1, \|→b\|=4, \|→c\|2=192 and →a.→b=2. If →c=(2→a×→b)−3→b, then the angle between →b and →c is
Answer» $\to a$ and $\to b$ are two vectors such that $\| \to a \| = 1, \| \to b \| = 4, \| \to c \|^{2} = 192$ and $\to a . \to b = 2$ . If $\to c = (2 \to a \times \to b) - 3 \to b$ , then the angle between $\to b$ and $\to c$ is

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