An interesting work with numbers

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Only for radians; you can do this with degrees between -57 to 57.

It looks like the calculator is broken; in no way should arccosine return a square root.

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Hello, please tell me other topics. I want an interesting idea to be done with numbers that is unique in the world.

Find the square root of -1

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Resolve Pi

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I left this one, of course you mean the number Pi, please another one ؟

Code the Fourier Transform in blocks only.
Input:

  • duration in ms
  • list of readings over that duration
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I left this

Monsieur Pierre de Fermat is looking for three integers a, b, c that satisfy the equation:
fermat
for any integer value of n greater than 2.

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Finding prime numbers by method given by a Greek mathematician, Eratosthenes of Alexandria.

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And,

How can we draw a line whose length is equal to square root of 2.

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That's interesting, but the square root of 2 is about 1.4. You might want to draw a line which length is √2 × 100 pixels.

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I did something like this:

As you can see, there is a yellow, blue and white line. The white line separates the phone screen into 2 equal parts. If the width of each part is 1, then the blue line is √2.

Now, if you ignore the blue line and the white line, there is also a yellow line. The yellow line is √2 ✕ 100 pixels long.

You could also check Proposals of math codes. Area polygon. Vertices rectangle. Linear regression. Decimal IP topic. There are some unfinished projects that you could work with

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but what about exact?

https://apod.nasa.gov/htmltest/gifcity/sqrt2.1mil

There is no, but √2 can physically be drawn.

Hint: Pythagorean theorem

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