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If veca=hati+2hatj+2hatk,|vecb| =5 and t...

If `veca=hati+2hatj+2hatk,|vecb|` =5 and the angle between `veca` and `vecb` is `(pi)/(6)`, then the area of the triangle formed by these two vectors as two sides is

A

`7/4`

B

`(15)/(4)`

C

`3/4`

D

`(17)/(4)`

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