The shortest distance of the point (a, b, c) from the x-axis is [MP PET 1999; DCE 1999]
√(a2+b2)
√(b2+c2)
√(c2+a2)
√(a2+b2+c2)
Distance from x-axis =√y2+z2=√(b2+c2).
∫π20 dθ1+tan θ= [Roorkee 1980; MP PET 1996; DCE 1999]
The maximum value of a cosx+b sinx is
[MNR 1991; MP PET 1999; UPSEAT 2000]