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If vecA,vecB, vecC represents the three ...

If `vecA,vecB, vecC` represents the three sides of an equilateral triangle taken in the same order then find the angle between (i) `vecA and vecB (ii) vecB and vecC (iii) A and vecC`.

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From the diagram the angle between the vectors `vecA and vecB` is `120^(@)` the angle between `vecB and vecC` is `120^(@)` the angle between `vecA and vecC` is `120^(@)`
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