Question

17 A pole of length 10m perpendicular to the earth, an observer observing the

tip of the pole angle of elivation is 450, then the distance between pole

and the observer is

(A)100m (B)20m (C)10m (D)√10m​

Answer 1

Answer:

length of pole=10m (perpendicular)

angle of elevation=45°

to find= distance between pole and observer (base)

sol. ^n - p=10m

since tan = p/b

and tan 45° =1

=> p/b=1

=>10/b=1 <=>b=10m Ans