From the top of a building AB, 60 m high, the angles of depression of

1.	From the top of a building AB, 60 m high, the angles of depression of the top and bottom of a vertical lamp-post CD are observed to be 30∘ and 60∘ respectively. Find (i) the horizontal distance between AB and CD, (ii) the height of the lamp-post, (iii) the difference between the heights of the building and the lamp-post.
Answer» From the top of a building AB, 60 m high, the angles of depression of the top and bottom of a vertical lamp-post CD are observed to be $30^{\circ}$ and $60^{\circ}$ respectively. Find (i) the horizontal distance between AB and CD, (ii) the height of the lamp-post, (iii) the difference between the heights of the building and the lamp-post.

From the top of a building AB, 60 m high, the angles of depression of the top and bottom of a vertical lamp-post CD are observed to be 30∘ and 60∘ respectively. Find (i) the horizontal distance between AB and CD, (ii) the height of the lamp-post, (iii) the difference between the heights of the building and the lamp-post.

Answer»

From the top of a building AB, 60 m high, the angles of depression of the top and bottom of a vertical lamp-post CD are observed to be $30^{\circ}$ and $60^{\circ}$ respectively. Find

(i) the horizontal distance between AB and CD,

(ii) the height of the lamp-post,

(iii) the difference between the heights of the building and the lamp-post.

Discussion

No Comment Found

Related InterviewSolutions

A ladder of length 6 metres makes an angle of 45° with the floor while leaning against one wall of a room. If the foot of the ladder is kept fixed on the floor and it is made to lean against the opposite wall of the room, it makes an angle of 60° with the floor. Find the distance between two walls of the room. [CBSE 2011]
12. The height of a building is one-third of the height of telephone exchange tower standing on it . If the angle of elevation of the top of the building when seen from a point on the ground is 30^° , then find the tangent of angle of elevation of the top of the telephone exchange tower when seen from the same point .
Question 5 In the following question out of the four options only one is correct, write the correct answer: If 5x3−4=2x5, then the numerical value of 2x-7 is: (a) 1913 (b) −1319 (c) 0 (d) 1319
In figure displayed below, if TP and TQ are the two tangents to a circle with centre O so that ∠POQ=110∘, then ∠PTQ is equal to
In the given figure, if ∠OAB=40∘, then ∠ACB = ___.
1. From a point 100 metre above a lake the angle of elevation of a stationary helicopter is 30^° and the angle of depression of reflection of the helicopter in the lake is 60 degree. Find the height of the helicopter above the lake.
If A and B are any two events having P(A∪B)=12 and P(A)=23 then probability of A ∩ B is (a) 12 (b) 23 (c) 16 (d) 13
For the given linear equation x−2y=1, match the different x values with their corresponding y values.
Let A be a square matrix of order n such that det(A)=10 and det(2A)2=40. Then the order of A is[1 mark]
A tangent is a secant with which of the following properties?

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment