The plane lx + my = 0 is rotated about its line of intersection with the x O y plane through an angle alpha. Th

Question Asked by a Student from EXXAMM.com Team

Q 2166678575.     The plane lx + my = 0 is rotated about its line of

intersection with the x O y plane through an angle alpha. Then

the equation of the plane is lx + my + nz = 0, where n is
A

pm sqrt (l^2 + m^2) cos alpha

B

pm sqrt ( l^2 +m^2) sin alpha

C

pm sqrt ( l^2 +m^2) tan alpha

D

None of these

HINT

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

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