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A TV tower stands vertically on a bank o...

A TV tower stands vertically on a bank of a canal.From a point on the other bank directly opposite the tower,the angle of elevation of the top of the tower is `60^@`.From another points 20 m away from this point on the line joining this point to the foot of the towre,the angle of elevation of the top of the tower is`30^@`(seeFig).Find the height of the tower and the width of the canal.

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R G PUBLICATION-SOME APPLICATION OF TRIGONOMETRY-EXERCISE
  1. The angle of elevation of the top of a building from the foot of the t...

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  2. Two poles of equal heights are standing opposite each other on either ...

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  3. A TV tower stands vertically on a bank of a canal.From a point on the ...

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  4. From the top of a 7 m high building ,the angle of elevation of the top...

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  5. As observed from the top of a 75 m high lighthouse from the sea-level,...

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  6. A 1.2m tall girl spots a balloon moving with the wind in a horizontal ...

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  7. A straight highway leads to the foot of a tower.A man standing at the ...

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  8. The angles of elevation of the top of a tower from two points at a dis...

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  9. Find the length of a shadow of a vertical post of heigth 6m when the a...

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  10. Find the angle of elevation of then sun when the ratio of the length o...

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  11. Find the angle of elevation of the sun when the ratio of the length of...

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  12. The height of a tower is 10m.What is the length of its shadow when sun...

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

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  14. The ratio of the length of a pole and its shadow is1:sqrt3.The angle o...

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

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

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

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

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

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

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