Let ABC be a triangle, the position vectors of whose vertices are respectively `7 hatj +
Channel: Doubtnut
Date: 2020-05-24

Let ABC be a triangle, the position vectors of whose vertices are respectively `7 hatj + 10 hatk , -hati + 6 hat j + 6 hatk  and -4 hati + 9 hatj + 6 hat k . " Then, " Delta ABC ` is