`|a|=10, |b|=2, a.b=12, |axxb|^2`

If |a|=10, |b|=2 and a.b=12, then value of |a xx b| is

If |a|=5, |b|6 and a.b=-25 , then |axxb| is equal to

Vectors a and b are such that |a|=1,|b|=4 and a.b=2." If " c=2axxb-3b , then the angle between b and c is

Prove that |axxb|^2 =a^2b^2 - (a.b)^2

Prove that |axxb|^2 =a^2b^2 - (a.b)^2

If a=i-j and b=j+k , then |axxb|^(2)+|a.b|^(2) is equal to