JAMB - Mathematics (2020 - No. 25)
A school boy lying on the ground 30m away from the foot of a water tank towel observes that the angle of elevation of the top of the tank is 60\(^o\). Calculate the height of the tank.
60\(\sqrt{3m}\)
30\(\sqrt{3m}\)
20\(\sqrt{3m}\)
10\(\sqrt{3m}\)
설명
h = 30 tan 60
= 30\(\sqrt{3}\)