Q4 of 68 Page 9

When the ratio of the height of a telephone pole and the length of its shadow is , find the angle of elevation of the sun.

Drawing the given problem so that we get a better understanding,



In the problem, it is given that,



We know that,



using this formula in the question,



(θ is the angle of elevation as discussed in question 2)


Θ = arctan( √3)
θ = 60˚.


Therefore, the angle of elevation is 60˚.


More from this chapter

All 68 →
2

A vertical pole is high and the length of its shadow is 21m. Find the angle of elevation of the source of light.

 3

A ladder of length 30 m is placed against a wall such that it just reaches the top of the 15 m high wall. At what angle is the ladder inclined to the ground?

 5

In the figure, ABC is a right triangle in which AB = 8 m, ∠BCA = 30°, then find

(i) the angle of elevation of A at C.


(ii) the angle of depression of C at A.


(iii) BC and AC

 6

ABC is a right triangle in which BC is horizontal, AB = 8 m, ∠BAC = 60°, then find

(i) the angle of elevation of A at C


(ii) the angle of depression of C at A


(iii) the distance of B from C