Something to lighten the mood

For Chemex solution, assume the unfolded paper circle has radius r and circumference pi*r. After folding, the resulting cone has three plys of paper on the left and one ply on the right. So the circumference of the cone's circular base is (pi*r/2). Aha!

If the circumference is (pi*r/2), then radius must be (r/2). Now we have a right triangle to analyze, whose hypotenuse is r, whose base is (r/2), and whose angle is half of the cone angle THETA.

The half angle of the cone is arcsin( (r/2) / r ) = arcsin (1/2). Thus THETA = 2 * arcsin(0.5) . Done. The angle happens to be an integer, which is fun.
 
Oops, right. Here's the correction.

... assume the unfolded paper circle has radius r and circumference 2*pi*r. After folding, the resulting cone has three plys of paper on the left and one ply on the right. So the circumference of the cone's circular base is (2*pi*r/2). Aha!

If the circumference is (2*pi*r/2), then radius must be (r/2). Now we have a right triangle to analyze, whose hypotenuse is r, whose base is (r/2), and whose angle is half of the cone angle THETA.

The half angle of the cone is arcsin( (r/2) / r ) = arcsin (1/2). Thus THETA = 2 * arcsin(0.5) . Done. The angle happens to be an integer, which is fun.

Member 6L6 solved it by text message, using equilateral triangles.
 
Member 6L6 solved it by text message, using equilateral triangles.

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Hey it's Christmas soon, AKA socks and underwear season in my world. That's all the big man ever seems to leave for me. Maybe a Polo shirt if I've been extra good.
I've often wondered how long I would be sentenced to the dog house if I bought a six pack of panties for the Mrs.
Frightening, truly frightening.
I strongly recommend it. Just be sure it is the right size and woman! (2 sizes too small!)
 
I drop into the dentist office for a cleaning today. One a table sits a pile of magazines. Some age slowly and some age really quick. Thinking someone is having his optigrab moment.
For those kids out there look up the movie titled The Jerk.
 

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