# if i,j,k is an orthonormal system of vectors, a is a vector and a cross i +2a-5j=0 then a=

Riddhish Bhalodia
6 years ago
let a = xi + yj + zk
then the equation



this implies
x = 0, y = 2z
thus
5z – 5 = 0 => z = 1 and y = 2
thus