BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Geometry doubt

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
Senior | Next Rank: 100 Posts
Posts: 59
Joined: Mon Jul 13, 2009 8:58 pm
Thanked: 10 times
GMAT Score:710

Re: Geometry doubt

by ankitns » Fri Aug 14, 2009 8:45 am
Could you please clarify further? Can you write out the whole question so we know what the context is?

Thanks.
winnerhere wrote:What does "the projection of one side on the other side in a triangle" mean?
Attempt 1: 710, 92% (Q 42, 63%; V 44, 97%)
Attempt 2: Coming soon!
Top
Master | Next Rank: 500 Posts
Posts: 231
Joined: Thu Apr 12, 2007 2:45 am
Thanked: 5 times
Followed by:1 members

Re: Geometry doubt

by winnerhere » Fri Aug 14, 2009 8:54 am
Its a postulate which states

"In an acute angled triangle the square of the side opposite to the acute angle is less than the squares of the other two sides by a quantity equal to twice the product of one of these two sides and the projection of the second side on the first side"

With ABC an acute angled triangle

(AC)sq = (AB)sq + (BC)sq - 2 BC.BD

Thanks
ankitns wrote:Could you please clarify further? Can you write out the whole question so we know what the context is?

Thanks.
winnerhere wrote:What does "the projection of one side on the other side in a triangle" mean?
Top
Post new topic Post Reply
• Page 1 of 1