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

1. ## 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)."

2. 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.

3. 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.

4. 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

5. Hai every body

Thank you for the replies.

6. It's very kind of you that you took the trouble to answer my request.