please solve it!!!!!!!!!!!!!!!!!!!!

Asked by kriscisf | 17th Nov, 2008, 08:35: PM

Expert Answer:

as stated in the question

ADB = 30 and ACB =60

so tan30 = AB / BD    and tan60 = AB / BC

let the speed of car be v then BD-BC =6v

put the values of BC and BD

2AB / 3 = 6v

now car has to travel BC to reach the foot of the tower.

so it will take BC/ v sec to reach there.

which is AB / v = 33

put value of AB=BC3

BC / v = 3 sec.

v= AB / 33

Answered by  | 29th Nov, 2008, 03:50: AM

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