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1.

` vec A`isa vector with direction cosines `cosalpha,cosbetaa n dcosgammadot`Assuming the `y-z`plane as a mirror, the directin cosines ofthe reflected image of ` vec A`in the plane area. `cosalpha,cosbeta,cosgamma`b.`cosalpha,-cosbeta,cosgamma`c. `-cosalpha,cosbeta,cosgamma`d. `-cosalpha,-cosbeta,-cosgamma`A. `cos alpha, cosbeta, cos gamma `B. `cos alpha, -cos beta, cos gamma `C. `-cos alpha, cos beta, cos gamma `D. `-cos alpha, -cosbeta, -cosgamma `

Answer» Correct Answer - C
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