Vo)LTED "Till) .11 81 %LTE7:12 aQ.7: On a horizontal plane there is a

1.	Vo)LTED "Till) .11 81 %LTE7:12 aQ.7: On a horizontal plane there is a verticaltower with a flagpole on the top of the tower.At a point, 9 meters away from the foot of thetower, the angle of elevation of the top andbottom of the flagpole are 60° and 30°respectively. Find the height of the tower andthe flagpole mounted on it. [TakeV3 1.73]
Answer» AB= FLAG POLE BC = TOWER CD = BASE = 9M TAN 60 = AC/CD ROOT3 = AC/9 AC = 9 ROOT3 TAN 30 = BC/CD 1/ROOT3 = BC /9 BC = 9/ROOT3 (ROOT3/ROOT3) BC = 3 ROOT3 AC = AB +BC 9 ROOT 3 = AB + 3 ROOT3 AB = 9 ROOT 3 - 3 TOOT 3 AB = 6 ROOT 3

Vo)LTED "Till) .11 81 %LTE7:12 aQ.7: On a horizontal plane there is a verticaltower with a flagpole on the top of the tower.At a point, 9 meters away from the foot of thetower, the angle of elevation of the top andbottom of the flagpole are 60° and 30°respectively. Find the height of the tower andthe flagpole mounted on it. [TakeV3 1.73]

Answer»

AB= FLAG POLE BC = TOWER

CD = BASE = 9M

TAN 60 = AC/CD

ROOT3 = AC/9

AC = 9 ROOT3

TAN 30 = BC/CD

1/ROOT3 = BC /9

BC = 9/ROOT3 (ROOT3/ROOT3)

BC = 3 ROOT3

AC = AB +BC

9 ROOT 3 = AB + 3 ROOT3

AB = 9 ROOT 3 - 3 TOOT 3

AB = 6 ROOT 3