Question Answers

Sahay Sir > Question Answers > NCERT Class 10 > Maths > Chapter 9 - Some Applications of Trigonometry > An electrician has to repair an electric fault on a pole of height 5m. She needs to reach a point 1.3m below the top of the pole to undertake the repair work. What should be the length of the ladder that she should use which, when inclined at an angle of 60 degree to the horizontal, would enable her to reach the required position? Also, how far the foot of the pole should she place the foot of the ladder? ( You may take root 3 =1.73).

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

The angle of elevation from top of tower from point on ground which is 30m away from foot of tower is 30 degree. Find the height of the tower.