FROM A WINDOW 9M ABOVE GROUND OF HOUSE IN A STREET ANGLES OF ELEVATION AND DEPRESSION OF TOP AND FOOT OF ANOTHER HOUSE ON OPPOSITE SIDE OF STREET ARE 30DEGREE AND 60DEGREE FIND HEIGHT OF OPPOSITE HOUSE AND WIDTH OF STREET.

Answer 1

If the width of the street is w and the height of the other house is h, then if you draw a diagram, it should be clear that

9/w = tan 60°
(h-9)/w = tan 30°

Now you can easily find w, and then h.

Answer 2

Width = 3×1.732 m
Height = 12m

Answer 3

Solve full

Answer 4

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