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The length of the string of a kite flyin...

The length of the string of a kite flying at 100 mts above the ground with the elevation of `60^@` is

A

200m

B

100m

C

`100sqrt2`

D

`200/sqrt3m`

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When the altitude of the sun is 30^@ the length of the shadow of a minaret on the ground is 30m .When the altitude of the sun is 60^@ ,find the length of the shadow of the minaret.

If the height and length of the shadow of a man are the same,then the angle of elevation of the sun is a) 15^@ b) 30^@ c) 45^@ d) 60^@

The angle of elevation of the top of a tower at a point on a level ground is 30°.After walking a distance of 100mtowards the foot of the tower along the horizontal line through the foot of the tower on the same level ground, the angle of elevation of the top of the tower is 60°.Find the height of the tower.

A vertical post of height 5sqrt3 m above the horizontal ground casts a shadow of length 15 m on the ground.Find the angle of elevation of the sun.

A man standing on the deck of a ship which is 10 m above the water level, observes the angle of elevation of the top of a hill as 60° and angle of depression of the base of a hill as 30°. Calculate the distance of the hill from the ship and the height of the hill.

A kite is flying at a height of 60 m above the ground.The string attached to the kite is temporarily tied to a point on the ground.The inclination of the string with the ground is 60^@ .Find the length of the string,assuming that there is no slack in the string.

The angle of elevation of an aeroplane from a point A on the ground is 60^@ . After a flight' of 30 seconds, the angle of elevation changes to 30^@ . If the plane is flying at a constant height of 3600sqrt3 m , find the speed of the plane in km/hour.

The angle of elevation of a jet plane from a point P on the ground is 60°.After a flight of 15 second the angle of elevation changes to 30°. If the jet plane is flying at a constant height of 1500sqrt3 ,find the speed of the jet plane in km/ hr.

A statue,1.6m tall,stands on the top of a pedestal.From a point on the ground,the angle of elevation of the top of the statue is 60^@ and from the same point the angle of elevation of the top of the pedestal is 45^@ .Find the height of the pedestal.

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R G PUBLICATION-SOME APPLICATION OF TRIGONOMETRY-EXERCISE
  1. The ratio of the length of a pole and its shadow is1:sqrt3.The angle o...

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  2. If the height and length of the shadow of a man are the same,then the ...

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  3. The length of the string of a kite flying at 100 mts above the ground ...

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  4. A tree casts a shadow 4m long on the ground,when the angle of elevatio...

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  5. The length of shadow of a tower on the plane ground is sqrt3 times the...

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  6. A vertical post of height 5sqrt3m above the horizontal ground casts a ...

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  7. What is the angle of elevation of sun when the length of the shadow of...

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  8. The angle of elevation of a post of height 55m as seen from the foot o...

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  9. A ladder 12m long is leaning on a wall.Its foot 6m away from the wall....

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  10. A ladder is kept standing at a slanting position against a wall of a h...

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  11. If the top of a temple subtends an angle of30^@ at a point on the grou...

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  12. If the top of a temple subtends an angle of60^@ at a point on the grou...

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  13. When a telephone post is broken by a strong wind,its top touches the g...

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  14. A tree of 15 m height was broken due to a heavy wind at a height of h ...

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  15. The angle of elevation of a temple is found to be 30^@ as seen from a ...

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  16. The angle of elevation of the top of a temple when observed from a poi...

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  17. An observer has found the angle of elevation of a temple to be 60^@ wh...

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  18. An observer 1.5m tall is 30metres away from a tower,50m high.Determine...

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  19. From a point which is 200sqrt2m away from the base of a temple the ang...

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  20. The angle of depression of the top and bottom of a tower are found to ...

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