# Regarding X ^ 2 + Y ^ 2 = d ^ 2 Forumula

• Sep 22nd 2006, 05:43 AM
Afridy
Regarding X ^ 2 + Y ^ 2 = d ^ 2 Forumula
"Give me a few (at least 3 - preferably from three different fields) examples from day to day practical life that I could use to explain the importance of the formula X ^ 2 + Y ^ 2 = d ^ 2 to a person who has never heard of Euclid or Pythogoras and has neither the time nor the interest to learn geometry just now (but I need to create the interest in him urgently to use it)."
• Sep 22nd 2006, 06:54 AM
ThePerfectHacker
Quote:

Originally Posted by Afridy
"Give me a few (at least 3 - preferably from three different fields) examples from day to day practical life that I could use to explain the importance of the formula X ^ 2 + Y ^ 2 = d ^ 2 to a person who has never heard of Euclid or Pythogoras and has neither the time nor the interest to learn geometry just now (but I need to create the interest in him urgently to use it)."

You can use it to measure distance.
• Sep 22nd 2006, 08:51 PM
JakeD
Quote:

Originally Posted by Afridy
"Give me a few (at least 3 - preferably from three different fields) examples from day to day practical life that I could use to explain the importance of the formula X ^ 2 + Y ^ 2 = d ^ 2 to a person who has never heard of Euclid or Pythogoras and has neither the time nor the interest to learn geometry just now (but I need to create the interest in him urgently to use it)."

It's the equation of a circle and there a lots of applications requiring the use of circles. Here are some:

• Graphics of all kinds including in computers, TV and movies. There many circles or partial circles on this page (every o for example).
• Routing cell phone calls.
• Navigation of planes, ships, Mars rovers. Applications of GPS such as in your car.
• Anything involving trigonometry (sines and cosines), which is just about everything today.
• Sep 24th 2006, 12:57 AM
Glaysher
Quote:

Originally Posted by Afridy
"Give me a few (at least 3 - preferably from three different fields) examples from day to day practical life that I could use to explain the importance of the formula X ^ 2 + Y ^ 2 = d ^ 2 to a person who has never heard of Euclid or Pythogoras and has neither the time nor the interest to learn geometry just now (but I need to create the interest in him urgently to use it)."

Builders often use the 3,4,5 triangle to measure
• Sep 24th 2006, 02:57 AM
Afridy
Hai every body

Thank you for the replies.

:D
• Sep 24th 2006, 06:11 AM
Afridy
It's very kind of you that you took the trouble to answer my request.