Thursday, June 21, 2007

GRE GEOMETRY QUESTION OF THE DAY

In △ABC, AB =6, BC = 8, and CA =10.5

COLUMN A--The measure of angle ABC

COLUMN B--90º

19 comments:

Anonymous said...

angle is not 90...6*6 + 8*8 not eq 10.5 * 10.5 ....and how ever u add u cant get rt angled triplet coz 6 and 8 are integers but 10.5 is not...

Anonymous said...

ya angle is not 90...so..column A is greater...cos if it were 6.4 the 3rd side shud ve been 10...so it has to be greater than 90...cos sides opposite to greater angles are gr8er...guess am rite??

Anonymous said...

i mean if the sides are 6 and 8...the third side wil be 10 for a rite angled triangle...since its 10.5 the angle is gr8er than 90 which implies column A is gr8er...

*sorry my prev comment was a bit obscure...*

pharmagal_talks said...

column A is greater...

Anonymous said...

since 9.somethin is the hypotenuse of a right angled traingle with sides 6 and 8...we see that 10 is something which is more than that hence the angle needs to be more than 90 degress in order to accomodate the third side..so coloumn A is larger

chandu said...

column b is greater

Anonymous said...

a is greater

Unknown said...

column a is greater

gau_dabbler said...

A IS GREATER

Anonymous said...

a is greater

Unknown said...

A

Anonymous said...

A is correct

Anonymous said...

a

since 6^2 + 8^2 < 10.5^2

column a is greater

Unknown said...

i am sure d ans is A

Anonymous said...

>90 deg,if right triangle hypotenuse would be 10,side as 10.5 = >90

sha said...

ANS is A..........

let angle of b be 90 then sum of squares of sides must be equal to hyop 6^2+8^2=100 then hypo is 10....... so my point is the given length is greater than 10 so angle will be greater than 90

Unknown said...
This comment has been removed by the author.
Unknown said...

A
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B .......... C
For a righta anfled TRIANGLE
AB=6;BC=8;AC=10...

IF AC increases the angle ABC increases and the Triangle Becomes obtuse.

The general condition for this Question can be stated as
Obtuse... AC^2 > AB^2+BC^2
Right...AC^2 = AB^2+BC^2
Acute....AC^2 < AB^2+BC^2

Anonymous said...

column A is greater then B