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Cake day: June 12th, 2023

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  • TwilightKiddy@programming.devtoScience Memes@mander.xyzTrigo-nom-etry
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    1 day ago

    If someone didn’t learn enough trigonometry in school:

    1+tan2c = cos2c/cos2c + sin2c/cos2c = (cos2c + sin2c)/cos2c = 1/cos2c;

    sqrt(1/cos2c) = |sec c|

    And here is for the people who still don't get the joke

    The reading of the answer is very similar to the word “sexy”, which makes the whole sentence a reference to the song “Sexy and I Know It” by LMFAO.



  • The divisability rule for 7 is that the difference of doubled last digit of a number and the remaining part of that number is divisible by 7.

    E.g. 299’999 → 29’999 - 18 = 29’981 → 2’998 - 2 = 2’996 → 299 - 12 = 287 → 28 - 14 = 14 → 14 mod 7 = 0.

    It’s a very nasty divisibility rule. The one for 13 works in the same way, but instead of multiplying by 2, you multiply by 4. There are actually a couple of well-known rules for that, but these are the easiest to remember IMO.










  • Apple isn’t any good for privacy. Just as Google, it’s a single big company that gets full control over your device. There are many examples of them exploiting it, by hashing your launched apps on Mac to check for malware, for example. Their systems are also known for being a lot more locked down than the rest, meaning getting rid of telemetry is not an easy task. Big companies are not interested in your privacy, they are interested in profit. And the profit they can get by building your profile is a lot more valuable for them than you as a user. That being said, the guy is right, but he is out of line.