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The unit vector veca and vecb are perpen...

The unit vector `veca` and `vecb` are perpendicular, and the unit vector `vecc` is inclined at an angle `theta` to both `veca` and `vecb`. If `vecc=alpha veca+betavecb+gamma(vecaxxvecb)`, then which one of the following is incorrect?

A

`x=costheta, y=sin theta, z=cos2theta`

B

`x=sin theta, y=cos theta, z=cos2theta`

C

`x=y=costheta, z^(2)=cos2theta`

D

`x=y=costheta, z^(2)=-cos2theta`

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AAKASH INSTITUTE-VECTOR ALGEBRA-ASSIGNMENT (SECTION-B)
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  14. The position vectors of the sides of triangle are 3hati+4hatj+5hatk, h...

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