The distance of point A (-2, 3, 1) from the line PQ through P (- 3, 5, 2), which makes equal angles with the axes is

[b] Here, θ=β=γ ∴cos2α+cso2β+cos2γ=1∴cosα=13√ Direction cosines of PQ are (13√,13√,13√) PM=Projection of AP on PQ =∣∣∣(−2+3)13√+(3−5)13√+(1−2)13√∣∣∣=23√ And AP=(−2+3)2+(3−5)2+(1−2)2−−−−−−−−−−−−−−−−−−−−−−−−−√=6√ AM=(AP)2−(PM)2−−−−−−−−−−−−−√=6−43−−−−−√=143−−−√