Q. 55.0( 4 Votes )
In the figure, AB
(i) From the diagram, it is clear that the angle of elevation of A with respect to C is 30˚ where BC becomes the horizontal.
(ii) DC is a vertical line drawn from A so that we get a reference line from which we can measure the depression angle.
As AD and BC are both vertical lines therefore they are parallel.
Now ∠ACB = ∠CAD as they are alternate angles along two parallel lines
therefore, ∠ CAD = 60˚
Now, from the diagram drawn before we can easily say that
The angle of depression of C at A is 60˚
BC = 8√3m
AC = 16m.
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