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Let vec(A)=hat(i)A cos theta+hat(j)A sin...

Let `vec(A)=hat(i)A cos theta+hat(j)A sin theta`, be any vector. Another vector `vec(B)` which is normal to `vec(A)` is :-

A

`hatiB cos theta + hatj B sintheta

B

`hatiBsin theta + hatjB costheta `

C

`hatiB sintheta - hatjB cos theta `

D

`hatiA costheta- hatj A sin theta`

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