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28 Oct 2008, 7:33 PM
| #1 (permalink) |
| cbff...  HSC: 2009 Gender: Male
Join Date: Sep 2008
Posts: 593
Last Activity:
17 Mar 2010, 8:44 PM  | Question 4 (a) (ii) You can hide this advertisement by registering. Hey. For question four of the 2008 HSC paper, it said the circle touched all three sides of the triangle. Does that mean you can assume the sides of teh Triangle KLM are all Tangents to the circle.Need that for the second proof... What is another way to do it?? |
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28 Oct 2008, 7:57 PM
| #2 (permalink) |
| New Member HSC: 2008 Gender: Female Location: Northern Beaches
Join Date: Apr 2007
Posts: 9
Last Activity:
30 Oct 2008, 6:54 AM  | Re: Question 4 (a) (ii) yeah i couldnt find any other way to do it so i assumed they were tangents =) i couldnt do part i) without assuming that
__________________ HSC Subjects: 2u Math (2007), 3u Math, 4u Math, 2u Eng Adv, 3u Eng, Spanish Beginners, SDD, Cosmology Distinction Aim: 98.95 UAI for bE/Biomedical combined bS/Adv Maths at USYD |
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28 Oct 2008, 9:39 PM
| #3 (permalink) |
| Executive Member  HSC: 2008 Gender: Female Location: Sydney
Join Date: Aug 2006
Posts: 756
Last Activity:
7 Feb 2010, 11:50 PM | Re: Question 4 (a) (ii) use your brains people. you have a couple of bloody planks resting on balls. the planks don't hover in midair, or penetrate the balls? |
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29 Oct 2008, 4:07 PM
| #4 (permalink) |
| Junior Member  HSC: 2008 Gender: Female Location: NSW
Join Date: Jan 2008
Posts: 30
Last Activity:
31 Oct 2008, 6:49 PM | Re: Question 4 (a) (ii) Short answer: yes. Long answer: you can assume they are tangents, because you need a perpendicular line form where the circle touches the sides to it's center to make working out the area easy. If it was not perpendicular I'm sure you couldn't have gotten the result asked. Tangents didn't actually cross my mind at all, the fact that it was perpendicular was just assumed. Once that was assumed and you got part i) done, you assume the same thing for part ii). Simple 
__________________ "Now you see that evil will always triumph because good is dumb" - Dark Helmet HSC 2007- Chemistry HSC 2008 - Adv.English, Maths Ext. 1&2, Physics, Religion 2unit, Japanese Continuers. |
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29 Oct 2008, 9:32 PM
| #5 (permalink) | |
| cbff... HSC: 2009 Gender: Male
Join Date: Sep 2008
Posts: 593
Last Activity:
17 Mar 2010, 8:44 PM | Re: Question 4 (a) (ii) Quote:
Thanks. | |
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29 Oct 2008, 9:39 PM
| #6 (permalink) | |
| cbff... HSC: 2009 Gender: Male
Join Date: Sep 2008
Posts: 593
Last Activity:
17 Mar 2010, 8:44 PM | Re: Question 4 (a) (ii) Quote:
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