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Applications of Dot Product

If |A⃗+ B⃗|...

Question

If $| \to A + \to B | = | \to A - \to B |$ then the angle between the vectors $A$ and $B$ is :

A

0

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B

\frac{π}{3}

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C

\frac{π}{2}

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D

\frac{π}{4}

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Solution

The correct option is D $\frac{π}{2}$
Using Parallelogram law, we can see angle between A and B is 90 degree.

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