Math, asked by sejalubale3436, 8 months ago

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Answered by priyanka0506

ladder on the platform of a fire brigade van can be elevated at an angle of 70° to the maximum. the length of the ladder can be externded upto 20m. if the platform is 2m above the ground,find the maximum height from the ground upto which the ladder can reach.

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Answered by swati2010

Answer:

Here,AB=2m

AD=20m

angle DAE=70°

and AE_|_CD

DE=CD-CE =(h-2)m

CE=AB

In right triangle AED,

sin70°=DE/AD

0.94=(h-2)/20

h-2= 20×0.94

h= 18.8+2

h= 20.8m

hence,the maximum height from the ground the lader can reach is 20.8m.

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