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The tops of two poles of height 20 m ...

The tops of two poles of height 20 m and 14 m are connected by a wire. If the wire makes an angle of `30o` with horizontal, then the length of the wire is (a) 12 m (b) 10 m (c) 8 m (d) 6 m

A

8 m

B

12 m

C

10 m

D

3 m

Text Solution

Verified by Experts

Let AO and CD be the towers .

In triangle ABC AC= 6 cosec `30 ^@ = 12 m `
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CENGAGE-HIGHT AND DISTANCE -Exercise
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  10. From the bottom of a pole of height h, the angle of elevation of the t...

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  11. A tower of height b subtends an angle alpha at a point on the same lev...

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  13. 5 m high pole stands on a building of height 25 m. The pole and the bu...

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  14. A vertical tower stands on a declivity which isinclined at 15^@ to the...

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  15. The length of the shadow of a pole inclined at 10^@ to the vertical t...

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  16. A tower subtends angles alpha,2alpha,3alpha respectively, at point A ,...

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