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If vec(a) = hat(i) + 2hat(j) +2hat(k) ,...

If `vec(a) = hat(i) + 2hat(j) +2hat(k) , |vec(b)| = 5` and the angle between `vec(a) and vec(b)` is `pi/6` , then the area of the triangle formed by these two vectors as two sides is

A

44242

B

15

C

44301

D

`15 sqrt3/2`

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The correct Answer is:
C
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HIMALAYA PUBLICATION-COMMON ENTRANCE TEST -2015-QUESTION BANK
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  6. Equation of line passing through the point (2,3,1) and parallel to...

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