ATAR Notes: Forum
HSC Stuff => HSC Maths Stuff => HSC Subjects + Help => HSC Mathematics Extension 1 => Topic started by: helkit98 on October 23, 2016, 08:24:15 pm
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Don't understand part ii of this question. I understand how angleCDA and angleAOC are 2x but don't get how this makes ACDO cyclic.
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Don't understand part ii of this question. I understand how angleCDA and angleAOC are 2x but don't get how this makes ACDO cyclic.
Hey! Looks like you've actually completed the proof; draw a circle around the supposed CQ, and you'll find that, based on your proof, angle subtending the same arc are equal. This will only be true for a CQ, therefore a CQ is what we have!
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Don't understand part ii of this question. I understand how angleCDA and angleAOC are 2x but don't get how this makes ACDO cyclic.
I can let out a vent on maths in focus here. For some fucking reason it's not covered in that textbook.