The plane `l x +my= 0` is rotated about its line of intersection with the plane `z = 0`, through an angle `alpha` then

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Q 2661580425.     The plane `l x +my= 0` is rotated about its line of intersection with the plane `z = 0`, through an angle `alpha` then equation of plane in its new position may be

(This question may have multiple correct answers)

A `lx+my+ z sqrt(l^2+m^2) tan alpha=0`
B `lx + my - z sqrt(l^2 +m^2)`
C data is not sufficient
D None of these

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(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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