Govt has decided to erect a new Electrical Power
Transmission Substation to provide power
supply to two villages A and B. The substation
has to to be on the line l. The distances A and B
from the foot of the perpendiculars P and Q on
line l are 3 km and 5 km. Distance between P
and Q is 6 km. (i) What is the smallest length of
cable required to connect the two villages. (ii)
Find the equations of the cable lines that
connect the power station to two villages.

Matching exercise