If →a ′=^i+^j,→b ′=^i+^j+2^k and →c ′=2^i+^j−^k. Then altitude of the parallelopiped formed by the vectors →a,→b,→c having base formed by →b and →c is (→a,→b,→c and →a′,→b′,→c′ are reciprocal system of vectors)
The correct option is D 1√2
Volume of the parallelepiped formed by →a ′,→b ′,→c ′ is 4
∴ Volume of the parallelepiped formed by →a,→b,→c is 14
∴ length of altitude = 14×2√2=1√2.