If |a b|^2+|a b|^2=144 and |a|=4 then |b|= _________. - Vidyadip

MCQ

If $|\vec{a} \times \vec{b}|^2+|\vec{a} \cdot \vec{b}|^2=144$ and $|\vec{a}|=4$ then $|\vec{b}|=$ _________.

A
16
B
4
C
3
D
9

✓

Answer

SELF

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