Hi DA produced and CB produced meet at Q. If angle CDB = angle DQC = x, prove that CD = ca. (Hint: Let angle CBD = y) Can anyone please give me a hint on how to do this question?
Last edited by xwrathbringerx; Dec 27th 2008 at 03:39 PM.
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Originally Posted by xwrathbringerx Hi DA produced and CB produced meet at Q. If angle CDB = angle DQC = x, prove that CD = ca. (Hint: Let angle CBD = y) Can anyone please give me a hint on how to do this question? I don't usually do geometry but since my first post was a circle geometry one and since it's the anniversary of my first post I will do this one. There's a theorem that tells you that . Therefore . From it follows that . Then . So is isosceles etc.
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