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Coordinate Geometry II TRIANGLES 
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#1
Mar1405, 08:03 PM

P: 82

The question is in the attached picture.
i can't seem to find a relevant formula and when i do i can't get a suitable answer, if some one can help, i'll highly appreciate it. Thanks in advance. 


#2
Mar1805, 03:04 PM

P: 390

a) It wants the equation of SD, as it looks to me...
You see that it hits D right in the middle of AC, so find the midpoint of AC. Then, you have the coordinate S(0,2) and that midpoint, do yy1 = m(xx1) b) ... Should be x  y = 2 according to the graph given. c) ...the coordinates are already given? d) Similar method to a) e) Pretty much find the distance between each of these points and S and prove that to be the radius of the circle. (radius should be square root 40) 


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