143 reputation
5
bio website alkhoo.carbonmade.com
location
age
visits member for 2 years, 8 months
seen Jun 17 at 4:44

Consultant, with over 20 yrs in the IT industry. Enjoys coding with open source and slapping up algorithm for numerical analysis.

First to integrate Facebook, Dropbox and Google App Engine (see: apps.facebook.com/fileglu).


Jun
15
comment Measuring diaognals without Sine Law
Accepted as technically correct answer (just that it is too complex for young kids).
Jun
15
awarded  Scholar
Jun
15
accepted Measuring diaognals without Sine Law
Jun
14
revised Measuring diaognals without Sine Law
Found a different solution, without quadratric formula
Jun
14
comment Measuring diaognals without Sine Law
math.stackexchange.com/questions/834327/… is a similar construct. Notice top figure has simple solution but lower figure involves quadratic formula. @jean: Am trying to find a simple solution which doesn't involve Trig functions. Meaning any kids can take a normal calculator and have some fun with triangulations.
Jun
14
asked Measuring Diagonals (part 2)
Jun
14
comment Measuring diaognals without Sine Law
Big picture: Triangulation for a kid. We cant see O(x,y) from origin (0,0), but we can walk along the X and Y axis until we see O, then measure (estimate) distance. From there, calculate 'q' (wondering if I skip sine law would simplify calculations).
Jun
14
comment Measuring diaognals without Sine Law
Updated pic, the angle between 'a' and 'f' is not right angle, sorry for confusion.
Jun
14
revised Measuring diaognals without Sine Law
Updated to better pic
Jun
14
awarded  Student
Jun
14
asked Measuring diaognals without Sine Law
May
3
comment Why is $\;n^2-\frac{n^2}{2} =\frac{n^2}{2}\;$?
Visually, take a piece of paper of size n by n, total area is n^2. Now fold it to half and remove it. What's the total area?
Nov
23
awarded  Teacher
Nov
17
comment Is every positive nonprime number at equal distance between two prime numbers?
[2,5] is 3 spaces apart.
Nov
17
revised Is every positive nonprime number at equal distance between two prime numbers?
added 6 characters in body
Nov
17
comment Is every positive nonprime number at equal distance between two prime numbers?
Copy + paste error, thanks for noticing my mistake. Re-edit time.
Nov
17
awarded  Editor
Nov
17
revised Is every positive nonprime number at equal distance between two prime numbers?
added 70 characters in body
Nov
17
awarded  Supporter
Nov
17
answered Is every positive nonprime number at equal distance between two prime numbers?