Math Chapter Wise

EnglishJDD-75-PGT TIER II-X-15 28.06.2015

Q21.The angle of elevation of the top of a tower from the top and bottom of a building of height ‘a’ are 30° ° and 45° ° respectively. If the tower and building stand at the same level, the height of the tower is–

A3a B3a C3a/2 Da (3 3) 2 +

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EnglishTGT 2001

Q22.One 60 meter the angle of depression of a boat from a tall light house is 15º boat at the foot of the light house the distance is

A3 1 60 3 1 − + m B3 1 60 3 1 + − m C3 1 + − m DNone of these

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EnglishPGT 2013, 2010

Q23.A flag is fixed on a 50 meter height pole it the angle of elevation of the highest point of the flag, from a point which is as for away from the ground point of the as is the height of the pole, is 60º then what will be the height of the flag?

A() 100 3 1 + B() 50 3 1 + C−( )/100 3 1 D−( )/50 3 1

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EnglishPGT 2009

Q24.A man from the top of a 100 meter high tower sees a car moving towards the tower at an angle of depression of 300. After some time, the angle of depression becomes 600. The distance (in meters) travelled by the car during the time is

A100 3 B200 3/3 C100 3/3 D200 3

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EnglishTGT 2009

Q25.What is the angle of elevation of the top of a 15 meter height tower from a point 15 meter away from the foot Will be

A450 B150 C900 D600

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EnglishTGT 2005

Q26.At a point on a level plane a tower subtends an angle θ and a flag-staff a ft in length at top of the tower subtends an angle φ. The height of the tower is:

Asin cos cos() a θ+ φ Bsin cos() sin θ+ φ a Ccos() sin sin a θ + φ θ φ DNone of these/

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EnglishNVS PGT 10-06-2019

Q27.A person walking on a straight road sees that there are two angles of elevation of 30º and 75º on a pole in front of him at two points km apart the height of the pillar is

A−( )/250 3 1 m B() 250 3 1 m + C() 250 2 1 m + D−( )/250 2 1 m

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EnglishKVS PGT 23-12-2018

Q28.Each side of a square ABCD subtends an angle of 60º at the top of a tower of height h, standing at the circum center of the square. If a be the length of the side of square, then,:

A2 2 3a 2h = B2 2 2a 3h = C2 2 2h a = D2 2 h 2a =

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