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SSC: Trigonometry: 14.12.2017

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Question 1

A telegraph post is bent at a point above the ground. Its top just touches the ground at a distance of 8√3 m from its foot and makes an angle of 30 ° with the horizontal. The height (in metre) of the post is

Question 2

The angle of elevation of the top of a building from the top and bottom of a tree are 30° and 45° if the height of the tree is 20m. Then find the height of the building.

Question 3

For a certain angle of elevation of sun, the height of the pole is equal to the length of its shadow. The height of the pole is 15 m. If the angle of elevation decreased by 15 °, the shadow of the pole will be increased by:

Question 4

A man running with a speed of 50m/s can cover the distance between two towers in 4 min, which is thrice the length of the longer tower. The difference between the heights of two towers is 50 m. If someone standing at mid-point looks at top of both towers, then find the angle of elevation for both the towers.