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Trigonometric l...

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  • Question 1
    4 / -1

    The base of a cliff is circular. From the extremities of a diameter of the base the angles of elevation of the top of the cliff are 30o and 60o. If the height of the cliff be 500 metres, then the diameter of the base of the cliff is

  • Question 2
    4 / -1

    The angle of elevation of the top of a tower from the top of a house is 60o and the angle of depression of the base is 30o. If the horizontal distance between the house and the tower be 12 m, then the height of the tower is

  • Question 3
    4 / -1

    A man whose eye is 1.5 metres above the ground observes the angle of elevation of a tower to be 60o. If the distance of the man from the tower be 10 metres, the height of the tower is

  • Question 4
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    A tower subtend an angle of 30o at a point distant d from the foot of the tower and on the same levels a the foot of the tower. At a second point h vertically above the first, the depression of the foot of the tower is 60o. The height of the tower is

  • Question 5
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    A tower of height b subtends an angle at a point O on the level of the foot of the tower and at a distance a from the foot of the tower. If a pole mounted on the tower also subtends an equal angle at O, the height of the pole is

  • Question 6
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    A tree is broken by wind, its upper part touches the ground at a point 10 metres from the foot of the tree and makes an angle of 45o with the ground. The total length of tree is

  • Question 7
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    The angle of depression of a ship from the top of a tower 30 metre high is 60o, then the distance of ship from the base of tower is

  • Question 8
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    The angle of elevation of a stationary sound form a point 2500 m above a lake is 15o and the angle of depression of its reflection in the lake is 45o. The eight of cloud above the lake level is

  • Question 9
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    From an aeroplane vertically over a straight horizontally road, the angles of depression of two consecutive mile stones on opposite sides of the aeroplane are observed to be α and β, then the height in miles of aeroplane above the road is

  • Question 10
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    A balloon is observed simultaneously from three points A, B and C on a straight road directly under it. The angular elevation at B is twice and at C is thrice that of A, If the distance between A and B is 200 metre and the distance between B and C is 100 metres, then the height of balloon is given by

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