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The tops of two poles of height 20 m and 14 m are connected by a wire. If the wire makes an angle 30° with the horizontal, then the length of the wire is :
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- 12 m
- 10 m
- 8 m
- None of these
Correct Option: A
Let us draw the figure from the given question.
Let the length of the wire is l .
Given :- QT = 6 m and RT = 14 m
In figure , we have
| 6 | = | sin 30° | = | 1 |
| l | 2 |
| ⇒ | l | = | 12 m. |
Hence , the length of the wire is 12 m .
