If angle between a(arrow) and b(arrow) is x/3 then angle between 2 á(arrow) and – 3 b(arrow) is
(A) pi/3 (B) 2pi/3 (C)pi/6 (D) 5pi/ 3
answer it quickly please!
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Answer:
c pi/6
it is real answer
I think it mey help you
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