generic image
Processing...
  • Games
  • Catalog
  • Develop
  • Robux
  • Search in Players
  • Search in Games
  • Search in Catalog
  • Search in Groups
  • Search in Library
  • Log In
  • Sign Up
  • Games
  • Catalog
  • Develop
  • Robux
   
ROBLOX Forum » Club Houses » Off Topic
Home Search
 

Re: Easy (?) Trigonometry Problem

Previous Thread :: Next Thread 
FauxBagel is not online. FauxBagel
Joined: 01 Jan 2011
Total Posts: 270
20 Jun 2013 06:52 AM
I barely remember anything.
I need your help.
http://www.roblox.com/tri-item?id=119740373
I'll bump if it's done pending.
Report Abuse
boiledeggtwin is not online. boiledeggtwin
Joined: 10 Apr 2010
Total Posts: 18389
20 Jun 2013 07:02 AM
hasn't loaded yet
Report Abuse
MadDog7736 is not online. MadDog7736
Joined: 01 Nov 2008
Total Posts: 8614
20 Jun 2013 07:13 AM
Give it about 4 or 5 more days OP.
Report Abuse
FauxBagel is not online. FauxBagel
Joined: 01 Jan 2011
Total Posts: 270
20 Jun 2013 05:33 PM
Bump, need all your brain power since I can't figure this one out. Can you explain as well? Please.
Report Abuse
FauxBagel is not online. FauxBagel
Joined: 01 Jan 2011
Total Posts: 270
20 Jun 2013 05:36 PM
And the goal is to find the missing variables.
Report Abuse
FauxBagel is not online. FauxBagel
Joined: 01 Jan 2011
Total Posts: 270
20 Jun 2013 05:40 PM
Bump of despairingness.
Report Abuse
regi900 is not online. regi900
Joined: 27 Aug 2011
Total Posts: 134
20 Jun 2013 05:45 PM
-7
Report Abuse
FauxBagel is not online. FauxBagel
Joined: 01 Jan 2011
Total Posts: 270
20 Jun 2013 05:47 PM
For x and y.
How?
Report Abuse
regi900 is not online. regi900
Joined: 27 Aug 2011
Total Posts: 134
20 Jun 2013 05:57 PM
Math.
Report Abuse
FauxBagel is not online. FauxBagel
Joined: 01 Jan 2011
Total Posts: 270
20 Jun 2013 05:59 PM
What happened to you account? Did you finally get perma'd or something?
Report Abuse
cheated is not online. cheated
Joined: 09 Nov 2010
Total Posts: 7073
20 Jun 2013 06:03 PM
x=12.5

y~3.45

--------------------------------
5:10; x-5:15
x= 12.5

(x-5)^2-5^2=x-2y^2
(12.5-5)^2 - 25 = 5.59^2
x-2y=5.59
-2y=5.59-12.5
-2y=-6.9
y=3.45

Report Abuse
cheated is not online. cheated
Joined: 09 Nov 2010
Total Posts: 7073
20 Jun 2013 06:09 PM
first I found the easiest ratio of a side, which is 5:10.

therefore x-5= (15/2 or 7.5)
x=7.5+5
x=12.5

Using Pythagoras' theorem trying to find the value of 'x-2y'

x-5^2 - 5^2 = x-2y
56.25^2-25=sqr(31.25)~5.59

therefore

x-2y~5.59
12.5-2y~5.59
-2y~5.59-12.5
-2y ~ -6.9
y ~ 3.45
Report Abuse
FauxBagel is not online. FauxBagel
Joined: 01 Jan 2011
Total Posts: 270
20 Jun 2013 06:09 PM
Thanks! You're a big help.
Report Abuse
Emilypwns25 is not online. Emilypwns25
Joined: 14 Mar 2011
Total Posts: 487
20 Jun 2013 06:10 PM
who dafuq actually does this stuff
Report Abuse
cheated is not online. cheated
Joined: 09 Nov 2010
Total Posts: 7073
20 Jun 2013 06:12 PM
Would've used rational numbers.
such as 1sqr2
But I find the direct way easier to comprehend.
Report Abuse
regi900 is not online. regi900
Joined: 27 Aug 2011
Total Posts: 134
20 Jun 2013 06:17 PM
The actual answer is -7 he's lying
Report Abuse
cheated is not online. cheated
Joined: 09 Nov 2010
Total Posts: 7073
20 Jun 2013 11:41 PM
lol nob where is your proof
Report Abuse
boiledeggtwin is not online. boiledeggtwin
Joined: 10 Apr 2010
Total Posts: 18389
20 Jun 2013 11:41 PM
this isn't trig


this is geometry
Report Abuse
cheated is not online. cheated
Joined: 09 Nov 2010
Total Posts: 7073
20 Jun 2013 11:43 PM
No this is trigonometry.
Report Abuse
boiledeggtwin is not online. boiledeggtwin
Joined: 10 Apr 2010
Total Posts: 18389
20 Jun 2013 11:44 PM
well barely


there's no sine, cosine, tangent, cotangent, secant, or cosecant


i remember this in geometry
Report Abuse
cheated is not online. cheated
Joined: 09 Nov 2010
Total Posts: 7073
20 Jun 2013 11:46 PM
Trig is an integral part in geometry.

You use trig to solve geometry. Pythagoras theorem is in trigonometry, and solving triangle ratios are there as well.
Report Abuse
JFKILLS34 is not online. JFKILLS34
Joined: 28 Aug 2008
Total Posts: 12832
20 Jun 2013 11:55 PM
x=5/2; y=35/22
~~
You have two equations:
1. (x-5)/(x-2y)=15/(x+y)
2. (x-5)/5=15/10
--
2. is first.
(x-5)/5=15/10
(x-5)/5=3/2
15=2(x-5)
15=2x-10
5=2x
x=5/2, or 2.5
--
1. is next. I plugged in x for 5/2, see?
(x-5)/(x-2y)=15/(x+y)
(2.5-5)/(2.5-2y)=15/(2.5+y)
-2.5/(2.5-2y)=15/(2.5+y)
-2.5(2.5+y)=15(2.5-2y)
-6.25-2.5y=37.5-30y
43.75-30y=-2.5y
43.75=27.5y
y=35/22 or ~1.59
Report Abuse
JFKILLS34 is not online. JFKILLS34
Joined: 28 Aug 2008
Total Posts: 12832
21 Jun 2013 12:01 AM
Cheated, you're wrong because you used the Pythagorean Theorem on an acute triangle rather than a right triangle, where the theorem is /only/ used.

Also, this isn't trigonometry because although it involves angles and sides of a triangle, does not involve the interdependence between them, involving sin, cos, tan, and other trigonometric functions to relate each.

Sorry I came so late. qq I doubt anyone cares at this point.
Report Abuse
regi900 is not online. regi900
Joined: 27 Aug 2011
Total Posts: 134
21 Jun 2013 01:56 AM
I care. Your right. And that guy was probably trying to cheat on homework or such, so he got it wrong.
Report Abuse
fellex is not online. fellex
Joined: 27 May 2008
Total Posts: 16686
21 Jun 2013 01:57 AM
ew math!!!
Report Abuse
Previous Thread :: Next Thread 
Page 1 of 1
 
 
ROBLOX Forum » Club Houses » Off Topic
   
 
   
  • About Us
  • Jobs
  • Blog
  • Parents
  • Help
  • Terms
  • Privacy

©2017 Roblox Corporation. Roblox, the Roblox logo, Robux, Bloxy, and Powering Imagination are among our registered and unregistered trademarks in the U.S. and other countries.



Progress
Starting Roblox...
Connecting to Players...
R R

Roblox is now loading. Get ready to play!

R R

You're moments away from getting into the game!

Click here for help

Check Remember my choice and click Launch Application in the dialog box above to join games faster in the future!

Gameplay sponsored by:
Loading 0% - Starting game...
Get more with Builders Club! Join Builders Club
Choose Your Avatar
I have an account
generic image