the length of a triangle height : Quant Question Archive [LOCKED]
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 23 Jan 2017, 10:57

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# the length of a triangle height

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Senior Manager
Joined: 30 May 2005
Posts: 276
Followers: 1

Kudos [?]: 35 [0], given: 0

the length of a triangle height [#permalink]

### Show Tags

31 May 2005, 13:44
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

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]

Senior Manager
Joined: 21 Mar 2004
Posts: 444
Location: Cary,NC
Followers: 3

Kudos [?]: 68 [0], given: 0

Re: the length of a triangle height [#permalink]

### Show Tags

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
Joined: 21 Mar 2004
Posts: 444
Location: Cary,NC
Followers: 3

Kudos [?]: 68 [0], given: 0

### Show Tags

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 [ 15.12 KiB | Viewed 579 times ]

_________________

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

Senior Manager
Joined: 30 May 2005
Posts: 276
Followers: 1

Kudos [?]: 35 [0], given: 0

### Show Tags

31 May 2005, 14:12
thanks I will leran the formula
thanks   [#permalink] 31 May 2005, 14:12
Display posts from previous: Sort by

# the length of a triangle height

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 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®.