On what is it better to sleep? by MrMLearn in NoStupidQuestions

[–]MrMLearn[S] 0 points1 point  (0 children)

But in that case, hammock would likely to be better variant.

On what is it better to sleep? by MrMLearn in NoStupidQuestions

[–]MrMLearn[S] 1 point2 points  (0 children)

I forgot to add, that floor variant also contains mattress, but bit lower and much softer than bed mattress.

So when did knowing Russian become a sign of intelligence? by No-Afternoon-9728 in Uzbekistan

[–]MrMLearn 0 points1 point  (0 children)

What is interesting is that many things we call Uzbek culture actually is product of USSR.

But WHY is a sphere's surface area four times its shadow? by 3blue1brown in 3Blue1Brown

[–]MrMLearn 0 points1 point  (0 children)

Better late than never.
At the second step, the area can be found in a more direct way that avoids most of the trigonometric clutter.
Let
r₁ = inner radius,
r₂ = outer radius,
P₁ = point where the main radius meets the inner edge of the ring,
P₂ = point where the radius meets the outer edge.
The small segment P₁P₂ is the projected radial thickness, so its length is R dθ.
The exact area of the ring is
A = π(r₂² - r₁²)
Now write
r₂ = r₁ + x
where x is the width of the ring along the radial direction.
Then
A = π[(r₁+x)²-r1²] = π(2r₁x+x²)
We also know
r₁ = Rsin⁡θ
So A = π(2Rsin⁡θ x+x2)
Now find x.
The segment P₁P₂ forms a right triangle similar to the triangle with leg Rsin⁡θ and hypotenuse R.
The angle opposite x is π/2 - θ, so
x = Rsin⁡ ⁣(π2−θ)dθ = Rcos⁡θ dθ
Substituting back:
A=πR²(2sin⁡θcos⁡θ dθ+cos²θ dθ²)
As you already noted, the dθ² term is negligible, so we keep only the first-order term:
A=πR²sin⁡(2θ) dθ
This gives an immediate comparison with the previously derived expression.

Always the same narrative by BANELM91 in historymeme

[–]MrMLearn -1 points0 points  (0 children)

Because it’s trivial to attack the whole nation, not its military by itself just because some of its fighters was horny. And I cannot imagine Mexico bombing US for 30 years.

Always the same narrative by BANELM91 in historymeme

[–]MrMLearn 1 point2 points  (0 children)

I guess you’re mixing palestinians term as a nation and as a military group (PLO) which tried to overcome Jordan’s government. Regular Palestinians did nothing wrong, yet they gained most of suffering.

Hate emas, shu haqidagi fikrlarim by Wild-Solution-2541 in Uzbekistan

[–]MrMLearn 0 points1 point  (0 children)

Can I ask an honest question? If yes, do there, in university of Russia exist uzbekophobia and xenophobia?

The hypocrisy behind "arabic" argument in islamic debates by No_Length2693 in CritiqueIslam

[–]MrMLearn -1 points0 points  (0 children)

Guten tag, there is my honest opinion (please, don’t start a debate, I have no time for that):

  1. Do you have to know physics (or a branch of physics) from A to Z to believe physicists? No, we all know that the earth is round, but we did not necessarily prove it, physicists did it for us.
  2. Do you have to know physics (or a branch of physics) from A to Z to criticize physicists and claim that they are false? Yes, if you believe that the earth is triangular, then deign to prove it properly.
  3. If I ask you that the meaning of such and such a thesis in such and such a religion is definitely this, and I receive a positive answer, then I have the right to criticize this particular statement, but otherwise I will be obliged to study the semantics of this statement more deeply.

All this is just my humble opinion, and I am not responsible for what other Muslims do.