Posted by Marydez on Monday, October 8, 2012 at 2:38am.
The angle of elevation of the top of a flagpole from a point on the level ground is 30degrees. From another point on the ground 20m, nearer the pole the angle of elevation is 60degrees. Calculate the height of the pole?

Mathematics  Anonymous, Monday, October 8, 2012 at 4:42am
1) y2+6y+94y2 its standard form.
its degree.
2) expand using identity (5b1/2)2(square)
3) find the product of 3/2xyz(4/9x2(square)y22xy)

Mathematics  Steve, Monday, October 8, 2012 at 10:19am
if the nearer point is at distance x from a pole of height h,
h/x = tan 60°
h/(x+20) = tan 30°
substituting the first into the second,
h = (h/tan60° + 20)tan30°
h = (h/√3 + 20)(1/√3)
h = 10(3+√3) = 47.32m
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