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The angle between veca and vecb is (5pi)...

The angle between `veca and vecb` is `(5pi)/(6)` and the projection of `veca ` in the direction of `vecb` is `( -6)/(sqrt3),` then `|veca|` is equal to : a)6 b)`(sqrt3)/(2)` c)`12` d)4

A

6

B

`(sqrt3)/(2)`

C

`12`

D

4

Text Solution

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The correct Answer is:
D
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