Reputation
2,555
Next privilege 3,000 Rep.
Cast close & reopen votes
Badges
8 32
Newest
 Inquisitive
Impact
~36k people reached

Dec
25
accepted The equation of a pair of tangents to a circle from a point.
Nov
17
awarded  Inquisitive
Nov
16
asked Arnold's combinatorial description of entropy.
Nov
14
comment Exercise 1.2.4 (From Grimmett and Stirzaker)
Did you try using the definitions? Can you state what you have to prove in order to show that G is closed under complementation?
Oct
28
answered ABC a triangle with orthocenter and circumcenter at (9,5) and (0,0) respectively if equation of side BC is 2x-y=1 , then find possible coords of A?
Oct
20
comment The equation of a pair of tangents to a circle from a point.
I did not follow the derivative-tangent argument. Why should the equality of the curve equation's derivative imply tangency?
Oct
19
comment The equation of a pair of tangents to a circle from a point.
I am talking about the equation of pair of tangents to circle through a point P. See iit-jee-maths.blogspot.in/2008/12/…
Oct
17
accepted Plucker's $\mu$
Oct
17
asked The equation of a pair of tangents to a circle from a point.
Oct
16
comment Plucker's $\mu$
I got motivated to read geometry after reading Felix Klein's "Elementary Mathematics from an Advanced viewpoint: Geometry". Perhaps it is the same book. I forgot to revisit that book. Thanks for this proof. Now I appreciate the Plucker trick a little more. I wish there even more examples!
Oct
15
comment Plucker's $\mu$
Thank you. I knew that in the complex projective plane they will always intersect at the "right" number of points. But I want to know if there is a "real" meaning to those conics that intersect at those 4 complex points? The point about tangency is cool. Thanks!
Oct
15
asked Plucker's $\mu$
Oct
13
revised Theory and problems book in euclidean, affine, and projective geometry
fixed grammar
Oct
2
comment A nice formula for area of the triangle
Thanks G-Man. Just the thing I was looking for :)
Oct
2
asked A nice formula for area of the triangle
Sep
29
revised On teaching elementary co-ordinate geometry.
deleted 255 characters in body
Sep
28
comment Algebra help with distance, two runners on circular track. How far before they meet.
measure theory tag? :)
Sep
28
awarded  Yearling
Sep
28
comment proving that $BC' \parallel B'C$
Related: math.stackexchange.com/questions/19692/…
Sep
28
asked On teaching elementary co-ordinate geometry.