# High school students may have just discovered an 'impossible' proof to the 2,000-year-old Pythagorean theorem

#### Yury Schwarzman

Unfortunately, the mathematical typesetting for the trigonometric formula used in the text has been lost: the identity reads cos^2x + sin^2x=1 (that is, cosine squared and sine squared, rather than cosine and sine of the doubled angle, respectively).

#### George Kosinski

It's weird how logic - combined with numerous examples - tells us the Pythagorean theorem must be true for every right angle, and yet, at the same time, it's so hard to prove that it is.

#### Clue-Anon

Simple HTML tags in a comment maybe won't make it through, but it should look like this: cos
Code:
``<sup>``
2
Code:
``</sup>``
x + sin
Code:
``<sup>``
2
Code:
``</sup>``
x = 1

I hate to rain on the parade, but this is just a trivial restatement of the theorem.

#### laudahwiz

Simple HTML tags in a comment maybe won't make it through, but it should look like this: cos
Code:
``<sup>``
2
Code:
``</sup>``
x + sin
Code:
``<sup>``
2
Code:
``</sup>``
x = 1

I hate to rain on the parade, but this is just a trivial restatement of the theorem.
Read more carefully - they said their proof works independently of the equation you quoted.

#### jayaram1961

They have used infinite series solution. I have a much simpler and better trigonometry proof without infinite series solution.

Replies
0
Views
350
Replies
0
Views
289
Replies
0
Views
399
Replies
0
Views
520
Replies
0
Views
1K