1.

If the angle between two intersecting lines having direction ratios (5, 7, 3) & (3, 4, 5) respectively can be given by cos−1(58√b), then what will be the value of b ?

Answer» If the angle between two intersecting lines having direction ratios (5, 7, 3) & (3, 4, 5) respectively can be given by
cos1(58b),
then what will be the value of b ?



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