a vertical pole is situated at the centre of a circular pond having its area 616cm^2. An observer observes the top of the pole from a point on a circumference and finds it bu 60°, find the height of the pole above the water level. About the author Brielle
h = AC tan 30 0 = BC tan 30 0 …(1)AC = BCi.e., ΔABC is isosceles triangle.But ∠ACB = 60 0 Hence it is an equilateral triangle.AB = BC = CA = aHence from (1),h = a tan 30 0 = 3 a Reply
h = AC tan 30
0
= BC tan 30
0
…(1)
AC = BC
i.e., ΔABC is isosceles triangle.
But ∠ACB = 60
0
Hence it is an equilateral triangle.
AB = BC = CA = a
Hence from (1),
h = a tan 30
0
=
3
a