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If a = hati + 2 hatj + 2 hatk, |b| = 5 a...

If `a = hati + 2 hatj + 2 hatk, |b| = 5` and the angle between a and b is `pi//6,` then the area of the triangle formed by these two vecotors as two sides is
a)`15/4` b)`15/2` c)15 d)`(15 sqrt3)/(2)`

A

`15/4`

B

`15/2`

C

`15`

D

`(15 sqrt3)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
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