class 10 cbse Archives - Page 33 of 35

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Rajan@2021Guru

Asked: April 4, 2021In: CBSE

If sin θ= (a^2-b^2)/(a^2+b^2), find the value of all T-ratios of θ

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This is the basic and conceptual question from trigonometry in which we have to find the values of all T-ratios ...Read more

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Rajan@2021Guru

Asked: April 4, 2021In: CBSE

If sin θ= √3/2, find the value of all T-ratios of θ

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This is the basic question from trigonometric ratios in which we have been asked to find the value of all ...Read more

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Rajan@2021Guru

Asked: April 3, 2021In: CBSE

From the top of a hill, the angles of depression of two consecutive kilometer stones due east are found to be 30o and 45o . Find the height of the hill

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I have not been able to solve this question of trigonometry (height and distance) in which we have to find ...Read more

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Rajan@2021Guru

Asked: April 3, 2021In: CBSE

From a point on the ground the angle of elevation of the bottom and top of the communication tower fixed at the top of 20 meters high tower are 45 degrees and 60 degrees. find the height of the tower

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This is the basic and conceptual question from trigonometry (height and distance) in which we are to find the height ...Read more

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Rajan@2021Guru

Asked: April 3, 2021In: CBSE

An aeroplane is flying at a height of 300 m above the ground. Flying at this height, the angles of depression from the aeroplane of two points on both banks of a river in opposite directions are 45 o and 60 o respectively. Find width of the river. [Use √3 =1.732]

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We have a question from trigonometry (height and distance) in which we found difficulty in finding the width of a ...Read more

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Rajan@2021Guru

Asked: April 3, 2021In: CBSE

A man observes a car from the top of a tower, which is moving towards the tower with a uniform speed. If the angle of depression of the car changes from 30 o to 45 o in 12 minutes, find the time taken by the car now to reach the tower.

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One of the most important and exam oriented question as it was already asked in previous year paper of 2017 ...Read more

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Rajan@2021Guru

Asked: April 3, 2021In: CBSE

An electrician has to repair an electric fault on a pole of height 4m.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° to the horizontal, would enable her to reach

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This is one of the difficult question from trigonometry (height and distance) in which we are to find the length ...Read more

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Rajan@2021Guru

Asked: April 3, 2021In: CBSE

A ladder of length 6 m makes an angle of 45 degree with the floor while leaning against one wall of a room. If the foot of the ladder is kept fixed on the floor and it is made to lean against the opposite wall of the room, it makes an angle of 60 degree with the floor. Find the distance between these two walls of the room.

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An important and exam oriented question as it is already asked in previous year paper of 2011 in which we ...Read more

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Rajan@2021Guru

Asked: April 3, 2021In: CBSE

As observed from the top of a lighthouse 100m above sea level the angle of depression of a ship sailing directly towards it changes from 30 degree to 60 degree. determine the distance travelled by the ship during the period of observation

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An important and exam oriented question from trigonometry as it was already asked in previous year paper of 2004 and ...Read more

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Rajan@2021Guru

Asked: April 3, 2021In: CBSE

The angle of elevation of the top Q of a vertical tower PQ from a point X on the ground is 60 ∘ . From a point Y, 40 m vertically above X, the angle of elevation of the top Q of tower is 45°. Find the height of the tower PQ

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This is the basic and conceptual question from trigonometry (height and distance) in which we are to find the height ...Read more

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