Question

If |a|=|b|=2 then find (a×b)2+(a.b)2=)

Answer 1

ans is a*b =4 and a.b=4

final ans is 16

Answer 2

Answer:

=a^2 b^2 sin^2 A+a^2 b^2 cos^2 A

=a^2 b^2 (sin^2 A+cos^2 A)

=a^2 b^2 =4(4)=16