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Work Done as Dot Product

The angle bet...

Question

The angle between the tow vectors $\to A = 5^i + 5^j$ and $\to B = 5^i - 5^j$ will be

A

Zero

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B

45^{o}

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C

90^{o}

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D

180^{o}

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Solution

The correct option is D $90^{o}$
AS we find that
$\to A . \to B = 0$
so,
$\to A . \to B = 0 ∴ θ = 90^{o}$

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