Questions
The foot of the perpendicular from to the join of is
a
43,0,3
b
−43,0,0
c
0,−4,0
d
0,−43,0
detailed solution
Correct option is C
Equation of the line joining 0,0,0 , 0,3,0 isx0=y3=z0General point on the above line isQ0,3y1,0The direction ratios of the line joining P2,−4,0 and Q0,3y1,0is−2,3y1+4,0Since the line PQ and x0=y3=z0are perpendicular to each other.33y1+4=0y1=−43 Therefore, the foot of the perpendicular of2,−4,0 to the join of 0,0,0 , 0,3,0 is Q0,−4,0Talk to our academic expert!
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