Let the vectors `overset(to)(a), overset(to)(b), overset(to)( c) \" and \" overset(to)(d)`
Channel: Doubtnut
Date: 29/12/2019

Let the vectors `overset(to)(a), overset(to)(b), overset(to)( c) \" and \" overset(to)(d)` be such that `(overset(to)(a) xx overset(to)(b)) xx ( overset(to)(c ) xx overset(to)(d)) = overset(to)(0) . \" If \" P_(1) \" and \" P_(2)` are planes determined by the pairs of vectors `overset(to)(a) , overset(to)(b) \" and \" oerset(to)(c ) , overset(to)(d)` respectively then the angle between `P_(1) \" and \"P_(2)` is