A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Jack1

  • one year ago

odd question: Why are there 360 degrees in a circle? ... I mean... why 360 specifically? why not 100? or 400? is there a mathy reason why they picked this number? (like something to do with pi or something)?

  • This Question is Closed
  1. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 7

    Other than the fact that 360 has so many divisors, there is no mathematical reason for 360. You may want to review history of math though...

  2. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    good question - but I dont think its anything to do with pi

  3. Jack1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    k, so it's not a special ration or golden ratio or anything like that? just: we picked 360... and we've always done it this way...?

  4. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 7

    360 is a highly composite number, thats good enough for greeks those days i guess

  5. Jack1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ok, cheers all, was just ... pondering ;)

  6. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 7

    https://en.wikipedia.org/wiki/Highly_composite_number

  7. horsegirl27
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    Very interesting question. I find it quite intriguing now and I actually think I might do some research to find out...

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    That's a convention, like why \(0!=1\) why \(x^0=1\) and ...

  9. ParthKohli
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @mukushla Those conventions are there for a reason though. If they're not introduced, then consistency will be broken.

  10. ParthKohli
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Allow me to introduce a relatively unknown unit of angles which, unlike degrees, makes sense. https://en.wikipedia.org/wiki/Radian

  11. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I heard that long time ago, Mathematicians wanted to know how to link the straight measurement with the curve one. They know that the unit of straight line is 1; how about the unit of the curve? They drew out a circle with radius 1 and straight it out, the length of the curve is exactly 2pi. The experiment was repeated with the other radius and the constant popped out was pi. hihihi.... hope it helps

  12. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 7

    @Jack1 you might be interested in pondering over why 1 feet = 12 inch

  13. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 7

    (jk)

  14. Jack1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    lol, imperial "feet" measurement is based on some king's foot size, yeah?

  15. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 7

    forreal ?

  16. horsegirl27
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    I learned in 3rd grade it was based on some king's foot size

  17. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Its interesting about the grad as a unit of angles - it used to be included on the older calculators but not on the newer ones.

  18. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I think it originated in France.

  19. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    400 is obviously less composite than 360

  20. Jack1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    that's interesting about grads tho @welshfella 1 grad = pi/200

  21. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    must look for a website

  22. Jack1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    just for 1x question: srsly awesome turnout everyone, props hey ;)

  23. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 7

    i love this picture that tells why radians are beautiful |dw:1436016853751:dw|

  24. Jack1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    awesome visual @ganeshie8 ummm... @welshfella sorry man, ur link goes nowhere?

  25. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    https://en.wikipedia.org/wiki/Gradian try that one

  26. ParthKohli
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Gradian makes a little more sense since it defines a right angle as 100 gradians.

  27. Jack1
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ok, haven't found any solid leads, but found a few articles saying its because in like 3000BC, the summarians or mesepetomians had a circular calendar for the year, based on 12 months of 30 days 12x 30 = 360 = 1 year (ish) not sure how accurate or historic it is... but there u go http://usatoday30.usatoday.com/news/science/wonderquest/2002-06-21-circle.htm

  28. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ParthKohli sure.

  29. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.