[Take 3 = 1.732)
10. On a horizontal plane there is a vertical tower with a flagpole on the top
of the tower. At a point, 9 metres away from the foot of the tower, the
angle of elevation of the top and bottom of the flagpole are 60° and 30°
respectively. Find the height of the tower and the flagpole mounted
on it. [Take 3 =1.73.]
[CBSE 2005]
thar an aither
it's urgent
Answers
Answered by
0
Answer:
ans will be 9 divided by root 3.
Answered by
6
Step-by-step explanation:
In the figure flag pole is AB, BC is tower and CD is base.
In △ACD,
⇒ tan60o=DCAC
⇒ 60=9AC
∴ AC=93m
In △DBC,
⇒ tan30o=DCBC
⇒ 31=9BC
∴ BC=39=33m
⇒ AC=AB+BC
⇒ AB=AC−BC
⇒ AB=93−33=63m
∴ Height of the flag pole is 63m and that of tower is 33
Similar questions