Posted by Marydez on Monday, October 8, 2012 at 2:38am.
1) y2+6y+9-4y2 its standard form.
its degree.
2) expand using identity (5b-1/2)2(square)
3) find the product of 3/2xyz(4/9x2(square)y2-2xy)
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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