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If 2veca*vecb = |veca| * |vecb| then the...

If `2veca*vecb = |veca| * |vecb|` then the angle between `veca & vecb` is

A

a.`30^(@)`

B

b.`0^(@)`

C

c.`90^(@)`

D

d.`60^(@)`

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The correct Answer is:
D
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