Question

If A+=5i^-2j^+3k^ and B~=2i^+j^+2k^,
component of B→ along A™ is
(A) 1438
(B) 2838
(C) 2838
(D)
1438​

Answer 1

Explanation:

a.b=|a||b|cos they

component of b along a= mod b cos theta

= a.b/|a|