1.

.Teaneéoflvaiosdtatangle of depression of the foot of the chimney from the top of the tower is 30 ftheight of the tower is 40 m, find the height of the chimney. According to poltincontrol norms, the minimum height of a smoke emitting chimney should be 100m.State if the height of the above mentioned chimney meets the polution norms. Whatvalue is discussed in this question?[CBSE 2014 556

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