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CBSE Class 10 Answered

heights and distances
Asked by suchet_r | 05 Oct, 2009, 08:32: PM
answered-by-expert Expert Answer

 

Let the height about the 60 m point be x and common side of the two triangles be y.

Then y = 60/tan 60 = 60/3 = 203

and tan 30  = x/y.

x = ytan30 = (203)(1/3) = 20 m

The height of the cloud above the lake surface is 60 + 20 = 80 m and above the point of observation is 20 m.

Regards,

Team,

TopperLearning.

Answered by | 05 Oct, 2009, 10:00: PM

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