Rakdos Posted April 12, 2005 Share Posted April 12, 2005 In this circle how do you find x [math]9^2+(x-3)^2=(x-3)^2[/math] right?? Link to comment Share on other sites More sharing options...
Dave Posted April 12, 2005 Share Posted April 12, 2005 You can form a pair of simultaneous equations: [math]x^2 + 9^2 = r^2[/math] where r is the radius of the circle, and: [math]x = r-3[/math] Substitute the second into the first and you're done. Link to comment Share on other sites More sharing options...
Rakdos Posted April 13, 2005 Author Share Posted April 13, 2005 thanks dave it was a bonus question on a test today and i wanted to know if my anwser was right, it wasn't Link to comment Share on other sites More sharing options...
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