The angle of elevation of the top of chimeny form the foot of tower 60 degree
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Answer:-
AB= 120
Explanation:-
According to the attached figure,
in ∆ DCB
DC/ BC = Tan 30°
40/BC = 1/√3
BC = 40√3 ....(1)
Now ,in ∆ ABC
AB/BC = Tan 60°
AB/40√3 = √3
AB = 120
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