Home Assignment: Heights & Distances: PSYsolution

Home Assignment: Heights and Distances : Home Assignment: Heights and Distances 1. From the top of a building 100 m high, the angles of depression of the top and bottom of a tower are observed to be 45° and 60° respectively. Find the height of the tower. Also find the distance between the foot of the building and bottom of the tower. 2. The angle of elevation of the top a tower at a point on the level ground is 30°. After walking a distance of 100m towards the foot of the tower along the horizontal line through the foot of the tower on the same level ground , the angle of elevation of the top of the tower is 60°. Find the height of the tower.

Slide 2 : 3. An electrician has to repair an electric fault on a pole of height 5 m. She needs to reach a point 1.3m below the top of the pole to undertake the repair work (see Fig.). What should be the length of the ladder that she should use which, when inclined at an angle of 60° to the horizontal, would enable her to reach the required position? Also, how far from the foot of the pole should she place the foot of the ladder? (You may take √3 = 1.73)

Slide 3 : Next Session On- 3 Dec 08 at 8 pm Topic – Co-ordinate Geometry The link is:- http://www.wiziq.com/online-class/50241-revision-of-complete-mathematics-syllabus-of-class-x-a-series