If →a,→b are unit vectors such that the vector →a+3→b is perpe – InterviewSolution

1.	If →a,→b are unit vectors such that the vector →a+3→b is perpendicular to 7→a−5→b and →a−4→b is perpendicular to 7→a−2→b,then the angle between →a and →b is
Answer» If $\to a, \to b$ are unit vectors such that the vector $\to a + 3 \to b$ is perpendicular to $7 \to a - 5 \to b$ and $\to a - 4 \to b$ is perpendicular to $7 \to a - 2 \to b$ ,then the angle between $\to a$ and $\to b$ is

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