Here's another solution... - Saab General Bulletin Board - Saabnet.com
The banner above is an advertisment - if it asks you to download software, please ignore.
Site News -
4/9 Saab Owners' Convention Day Pass Raffle |
3/26 M Car Covers (by State of Nine)
[General |
Members |
C900 |
9000 |
NG900 & OG93 |
93 |
95 |
NG95 |
99 |
Sonett |
Vintage Models |
Clubs |
Other Cars |
FAQs |
Gifts |
Member Photo Galleries |
Member Directory |
Classifieds |
Manuals |
*Buddy Registry |
*Mileage Registry |
Polls |
What's New |
Raffle |
Photo of the Month |
Sponsors]
[Main General Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Here's another solution...
Posted by zeke (more from zeke) on Sat, 20 Nov 2004 17:28:54
In Reply to: if you passed high school geometry read on..., Liam, Thu, 18 Nov 2004 12:56:10
Members do not see ads below this line. - Help Keep This Site Online - Signup
Like GeneN's, it also involve the use of any auxilliary lines and does use trig': the law of cosines, which states the square of the side of any triangle equals the sum of the squares of the other two sides minus the product of the other two sides multiplied by the cosine of their included angle. In this case, the included angle would be 120º and the two sides would each measure 10. The cosine of 120º, because it's in the 2nd quadrant, is the negative of the cosine of 60º, ie., -1/2.
The sum of the square of both sides (10) is 200. Twice the product of both sides is 200 but multiplied by -1/2 gives -100. However, we're subtracting a negative, so adding 100 to 200 gives 300, which is the square of the side we're looking for - another way of expressing the answer would be to say that the side of the triangle measures the square root of 300.
posted by 24.91.254...
Posts in this Thread:
- if you passed high school geometry read on..., Liam, Thu, 18 Nov 2004 12:56:10
- Here's another solution..., zeke, Sat, 20 Nov 2004 17:28:54 <-- Viewing This Message
- So, the question remains....>>>, PGAero
, Thu, 18 Nov 2004 16:34:40 - Re: if you passed high school geometry read on..., Liam, Thu, 18 Nov 2004 16:11:03
- 10" x (the square root of 3), or ~17.32", IrieTom , Thu, 18 Nov 2004 13:37:03
- Re: if you passed high school geometry read on..., Gene N , Thu, 18 Nov 2004 13:35:29
- There's only one equilateral triangle that can be..., zeke, Thu, 18 Nov 2004 13:35:00
- Re: square that diameter and 1/2? n/m, t_mokes, Thu, 18 Nov 2004 13:11:35
Members do not see ads below this line. - Help Keep This Site Online - Signup
Post a Followup
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
StateOfNine.com
 |
SaabClub.com
 |
Jak Stoll Performance
 |
M Car Covers
 |
Ad Available
 |
Random Saabnet.com Member Gallery Photos (Click Image)
This is a moderated bulletin board - Posting is a privilege, not a right.
Unsolicited commercial postings are not allowed (no spam). Please, no For Sale or Wanted postings, SERIOUSLY.
Classifieds are to be listed in The Saab Network Classifieds pages.
This is a problem solving forum for over 250,000 Saab owners, so expect to see
problems discussed here even though our cars are generally very reliable. This is not an anything goes
type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the
Saabnet.com Mission and Purpose Page. Please remember that you are
not anonymous. Site Contact | Site Donations | Other Sites by SP -
Poverty2Prosperity.org | Run Club Menlo Park | ScreenBot
Site Members do not see red text instructions, bottom of the page anchor ads, or box ads.
Click here to see all
the Site Membership Benefits!