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If a + b + c = 0 and |a| = 3, |b| = 4 an...

If a + b + c = 0 and |a| = 3, |b| = 4 and |c| = `sqrt(37)` the angle between a and b is

A

`pi/4`

B

`pi/2`

C

`pi/6`

D

`pi/3`

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The correct Answer is:
D
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