2 mo. ago • 89%

Harm

42 comments

Is this genuine? Like is the unit circle really fucking you up that bad?

36
I'm pretty dumb, so I don't understand this one.

33
- Pythagorean theorem.
  
  Although, don't solve this or else Pythagoras might throw you off of a boat
  
  14
  
  Pretty sure this is Pythagorean Identity, theorem is a²+b²=c²
  
  17
- Probably that trigonometry is the highest math the average person will take?
  
  3
  
  I got to calculus 2 and proceeded to forget everything through algebra II once I took a break from math for a semester.
  
  5
You leave my unit circle alone!

22
Why?

19
- SOH CAH TOA
  
  9
  
  Ah, sohcahtoa. Not to be confused with
  
  24
  
  Please elaborate.
  
  10
Believe this was featured in a paper that recently used trig to prove the Pythagorean theorem (previously thought to be a circular definition). I think some highschoolers cracked it as part of a mathematics challenge or something.

14
Someone needs to turn this into loss

5
Why is it 1

3
- It was freely chosen for simplicity.
  
  If you choose another R, the other sides (x and y) become R*cos(th) and R*sin(th)
  
  I don't understand what is harmful about the unity circle either.
  
  27
- Any circle could have its radius technically be 1, as long as you set the units of measurement so that 1 equals the radius of the circle.
  
  12
  
  units? what are those? I never use units, or pay attention to capitals. pure math ftw, baby!
  
  spoiler
  
  Rapidly hides from the science professors
  
  2
- Because it's a unit circle.
  
  6
- for the same reason that rulers start with 1, it would be utterly pointless to use anything else.
  
  1
  
  Your ruler starts with 1? How do you measure stuff between 0 and 1?
  
  6
Took me a minute to notice, but it was worth it

-1
- Notice what??
  
  You can use the spoiler tag
  
  No spoiler
  
  7
- Notice what, exactly. I still don't get it.
  
  5
  
  Take a look again, it's still there
  
  -4
I'm fine doing SOH CAH TOA, but the unit circle can go fuck itself. Same with radians.

-1
- SOH CAH TOA is just a trick to make rote memorization of procedure easier. Understanding the unit circle will let you understand what trigonometry is actually doing.
  
  14
- Yeah, dividing a circle into 360 parts, then subdividing those by 60, and further subdividing those by 60 makes so much more sense than just using ratio of a number fundamental to circles themselves.
  
  6

You've viewed 42 comments.