Question

Given that: 𝐴= 2i + 9j +3k and 𝐵= -i – 4k . Find 𝐴 𝑋𝐵

Answer 1

$\vec A×\vec B=(-36-0)\vec i-(-8+3)\vec j+(0+9)\vec k=-36\vec i+5\vec j+9\vec k.$