1.

If →a,→b lie in a plane normal to the plane containing →c and →d, then ∣∣∣(→a×→b).(→c×→d)∣∣∣ is equal to

Answer»

If →a,→b lie in a plane normal to the plane containing →c and →d, then ∣∣∣(→a×→b).(→c×→d)∣∣∣ is equal to



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