First slide

Vectors

Question

If for two vectors $\vec{A} and \vec{B}, \vec{A} \times \vec{B} = 0, the vectors$

Moderate

A

Are perpendicular to each other
B

Are parallel to each other
C

Act at an angle of $60^{0}$
D

Act at an angle of $30^{0}$

Solution

$\vec{A} \times \vec{B} = 0$ $∴$ ${sinθ = 0 ⇒θ = 0}^{0}$
Two vectors will be parallel to each other.

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