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Two equal vectors have a resultant equal to either of them. The angle between them is

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60⁰

90⁰

120⁰

45⁰

answer is D.

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Detailed Solution

$C = \sqrt{A^{2} + B^{2} + 2 A B \cos θ} P u t A = B = C \Rightarrow θ = 120^{0}$

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