Find all School-related info fast with the new School-Specific MBA Forum

It is currently 20 Sep 2014, 16:29

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

the length of a triangle height

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
avatar
Joined: 30 May 2005
Posts: 283
Followers: 1

Kudos [?]: 3 [0], given: 0

GMAT Tests User
the length of a triangle height [#permalink] New post 31 May 2005, 13:44
Hello
does anyone has a clue on how to approach the following exercises
Right answer b plz the triangle is in the attachment
ty

20. In the right triangle PQS above, if PQ =3 and PS = 4, then
(A) 9/4
(B) 12/5
(C) 16/5

(D) 15/4
(E) 3/20
Attachments

20.doc [30 KiB]
Downloaded 35 times

To download please login or register as a user

Senior Manager
Senior Manager
User avatar
Joined: 21 Mar 2004
Posts: 445
Location: Cary,NC
Followers: 2

Kudos [?]: 6 [0], given: 0

GMAT Tests User
Re: the length of a triangle height [#permalink] New post 31 May 2005, 13:52
mandy wrote:
Hello
does anyone has a clue on how to approach the following exercises
Right answer b plz the triangle is in the attachment
ty

20. In the right triangle PQS above, if PQ =3 and PS = 4, then
(A) 9/4
(B) 12/5
(C) 16/5

(D) 15/4
(E) 3/20


You can either work it out by algebraic equations or use the formula.

Height = side1*side2/hypotenuse = 3*4/5 = 12/5


If you work algebraically in gmat exam, you're doomed because solving the equations is gonna take you a lot of time.

suppose h=height , it falls on side=5, and divides it into x, 5-x

so h^2 = 3^2 -x^2
& h^2 = 4^2- (5-x)^2

Eliminate x and Solve for h, and you will get it = 12/5
IN EXAM Please DONT DO this way. Use the formula.

Also see this post.
http://www.gmatclub.com/phpbb/viewtopic.php?t=16791
_________________

ash
________________________
I'm crossing the bridge.........

Senior Manager
Senior Manager
User avatar
Joined: 21 Mar 2004
Posts: 445
Location: Cary,NC
Followers: 2

Kudos [?]: 6 [0], given: 0

GMAT Tests User
 [#permalink] New post 31 May 2005, 14:07
Putting a diagram for everyone to use the formulae. I spent quite some time deriving it today.
Attachments

right angle triangle.jpg
right angle triangle.jpg [ 15.12 KiB | Viewed 310 times ]


_________________

ash
________________________
I'm crossing the bridge.........

Senior Manager
Senior Manager
avatar
Joined: 30 May 2005
Posts: 283
Followers: 1

Kudos [?]: 3 [0], given: 0

GMAT Tests User
thanks [#permalink] New post 31 May 2005, 14:12
thanks I will leran the formula
thanks   [#permalink] 31 May 2005, 14:12
    Similar topics Author Replies Last post
Similar
Topics:
Experts publish their posts in the topic Standard lengths of right triangles nickk 4 28 Feb 2010, 03:33
A triangle is inscribed in the semicircle. If the length of haichao 8 09 Nov 2008, 17:37
An equalateral triangle is cut in half. If the height of alimad 4 18 Oct 2007, 05:40
In triangle ABC , the length of AB is 3 and the length of BC kevincan 5 14 Jul 2006, 03:03
Size of the room - Length = 12 - Width = 16 - Height = gamjatang 3 25 Nov 2005, 05:23
Display posts from previous: Sort by

the length of a triangle height

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.