July 2nd, 2017, 11:51 PM  #11 
Senior Member Joined: Jun 2015 From: England Posts: 662 Thanks: 187 
It is very common in construction to want a line at right angles to some building line. It is also very common for angle measuring equipment to be unavailable. I can't think why a line at 45 degrees might be wanted, but if this were the case I would set out the line using a tape and integer right angled triangles as already indicated. Along given line AB set in peg C at 3metres. Using two tapes from A and B or one flexible tape in a complete triangle, set out points D and E at right angles to AC and 4m offset. (thus the third side is 5m) set in pegs F and G along AD and CE at 3m and confirm the distance FG is 3m The diagonals AG and CF will be at 45 degrees. If I needed a 45 template for roofing timbers I would just mark out a convenient square on a piece of ply and cut it diagonally in half. The last thing I would want would be calculations and values to umpteen decimal places. Last edited by studiot; July 3rd, 2017 at 12:42 AM. 
July 3rd, 2017, 03:03 AM  #12 
Banned Camp Joined: Jul 2010 Posts: 118 Thanks: 0  There is no separation .....
Well, now you talked like a mathematician who is also a physicist. There is no separation between geometry, physics, and mathematics. Therefore, it seems to me very natural to offer geometric measurement. But not everyone gets it. Thanks 
July 3rd, 2017, 03:33 AM  #13 
Senior Member Joined: Feb 2016 From: Australia Posts: 1,322 Thanks: 453 Math Focus: Yet to find out.  You haven't offered anything that i can see. How about do away with your examples and calculations for a second, and just try explain in words what you want to say (without posting that pdf you've been posting).

July 3rd, 2017, 03:53 AM  #14  
Math Team Joined: May 2013 From: The Astral plane Posts: 1,570 Thanks: 613 Math Focus: Wibbly wobbly timeywimey stuff.  Quote:
Unless you wander into some kind of weird bubble in the cosmos you will always get a value of $\displaystyle \pi$ that, well, is equal to $\displaystyle \pi$. It's a physical constant! You can't simply wade in and change it. (FYI: My Master's thesis was based in trying to effectively change the weak mixing angle over a small region of spacetime. It failed miserably. Take it from some experience that you don't want to go around messing with constants.) Yeah, I know. I'm not agreeing with your results so therefore I "don't get it." Dan  
July 3rd, 2017, 04:12 AM  #15  
Banned Camp Joined: Jul 2010 Posts: 118 Thanks: 0  Please, here's the story Quote:
* Two real circles. (Steel cylinders) appear in the measurement. The measurement should reveal a small phenomenon of inequality Cylinder diameter to cylindrical diameter (not equal) to cylinder circumference to cylinder circumference. The dramatic conclusions you can get. Thanks  
July 3rd, 2017, 04:19 AM  #16  
Banned Camp Joined: Jul 2010 Posts: 118 Thanks: 0  Please read the article Quote:
 
July 3rd, 2017, 04:36 AM  #17  
Senior Member Joined: Feb 2016 From: Australia Posts: 1,322 Thanks: 453 Math Focus: Yet to find out.  Quote:
Not sure what this is supposed to signify. Quote:
Quote:
So, you want to offer an institution of physics the ability to differentiate between two cylinders diameters and their circumferences? Last edited by skipjack; July 3rd, 2017 at 05:36 AM.  
July 3rd, 2017, 04:54 AM  #18 
Banned Camp Joined: Jul 2010 Posts: 118 Thanks: 0  I try again
In measuring inequality, there is always an error. If the measurement is very accurate, it exceeds the error range. Very accurate measurement, can prove inequality. Measurement, never determines equality. thanks 
July 3rd, 2017, 05:03 AM  #19 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 10,480 Thanks: 693 
Ahhhh geezzzz buddy, why don't you get an English girlfriend (or boyfriend) to help you post in clear English? I can see your next thread: prove that paper shoes size 8 (like those in an asylum!) are slightly shorter than lumbermen's size 8 boots! Note: for paper shoes in asylum, contact Joppy if you need specifications 
July 3rd, 2017, 05:20 AM  #20 
Senior Member Joined: Feb 2016 From: Australia Posts: 1,322 Thanks: 453 Math Focus: Yet to find out.  

Tags 
special, triangles 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Finding Exact Angles without Special Triangles  Tzad  Algebra  2  November 17th, 2013 10:12 AM 
special name?  nikkor180  Real Analysis  0  June 17th, 2013 10:56 AM 
On a special Tsystem  majidian  Linear Algebra  4  October 23rd, 2012 08:31 PM 
A special thank you  suomik1988  Calculus  2  December 8th, 2010 09:08 PM 