Computer Science, asked by steveazad, 8 months ago

The tops of two poles of heights 18 metres
and 12 meters are connected by a rope. If
the rope makes an angle 30° with the
horizontal, the length of the rope in metres
is
1/12
2) 18
J12
3) 24
4) 30​

Answers

Answered by sonusharma138
0

According to the problem given ,

Height of the first pole = AB = 18 m

Height of the second pole = CD = 12 m

Length of the wire = AD

AE = AB - BE

= AB - CD

= 18 - 12

AE = 6 m

In ∆ AED ,

< AED = 90° ,

<ADE = 30° ( given )

Sin 30° = AE/AD

1/2 = 6/AD

AD = 6 × 2

AD = 12 m

Therefore ,

Length of the wire = AD = 12 m

Option ( a ) is correct.

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