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A vector makes angle with X,Y and Z axes...

A vector makes angle with X,Y and Z axes that are in the ratio 1:2:1 respectively. The angle made by the vector with Y-axis is

A

`pi//3`

B

`pi//4`

C

`pi//6`

D

`pi//2`

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The correct Answer is:
D
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  13. The projection of a vector vec(r ) = 3 hat(i) + hat(j ) + 2 hat(k) on ...

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  15. Projection of the vector 2 hat(i) + 3hat(j) + 2hat(k) on the vector ha...

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  16. If vec(a) = 2 hat(i) + 3hat(j) + 6hat(k) and vec(b) = 3hat(i) + 4hat(j...

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