1.

The vectors bar(a) and bar(b) are unit vectors perpendicular to each other. The unit vector bar( c ) makes an angle theta with bar(a) and bar(b). If bar( c )=x bar(a)+y bar(b)+z(bar(a)xx bar(b)) then ………..

Answer»

`x=cos THETA,y=sin theta,Z=COS2THETA`
`x=sin theta,y=cos theta,z=-cos2theta`
`x=y=cos theta,z^(2)=cos2theta`
`x=y=cos theta,z=-cos2theta`

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