Author Topic: Solve  (Read 7841 times)

Offline bruski

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« Reply #20 on: January 19, 2019, 12:33:41 AM »

I can\'t draw it but it involved a few triangles from the tangents where the straight lines meet up with the diameters. I make for a terrible math teacher I know it.


 


bruski



Offline Cutter

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« Reply #21 on: January 19, 2019, 10:53:42 AM »
There’s usually more than one approach

for solving these, here’s mine


Offline Cutter

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« Reply #22 on: January 20, 2019, 11:49:51 AM »

Last One



Offline bruski

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« Reply #23 on: January 20, 2019, 12:55:27 PM »

Is it 38.577 degrees? I have been watching Joe Pieczynski channel which he is doing a series on rotary tables and there geometry right now.


 


bruski


« Last Edit: January 20, 2019, 01:03:05 PM by bruski »

Offline Cutter

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« Reply #24 on: January 21, 2019, 03:29:01 PM »
Two triangles 


Offline Roller

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« Reply #25 on: January 21, 2019, 04:53:50 PM »
I got 38.4095 degrees.


Frank

Offline maccrazy2

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« Reply #26 on: January 21, 2019, 09:13:19 PM »
I have been watching Joe’s videos as well. I like that the videos are to the point and generally cover one single subject.

Offline Cutter

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« Reply #27 on: January 22, 2019, 02:09:37 PM »
My Trig table book, used every day when I

was programming NC code with Quill & Ink


Offline Roller

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« Reply #28 on: January 22, 2019, 07:00:21 PM »

Wow, you have the new book!  Mine is dated 1962, LOL!


 


Frank



Offline Cutter

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« Reply #29 on: February 06, 2019, 05:52:29 PM »

OK , last one again



Offline bruski

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« Reply #30 on: February 10, 2019, 12:01:04 AM »

Is it 20 degrees


 


bruski



Offline Cutter

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« Reply #31 on: February 10, 2019, 11:26:35 AM »


Is it 20 degrees


 


bruski




No Sir,


 


 

First solve angle A  by adding B to C and subtracting from 180°

« Last Edit: February 10, 2019, 12:05:30 PM by Cutter »

Offline Cutter

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« Reply #32 on: February 14, 2019, 07:31:40 PM »
Next the triangle with two known angles 50° & 60° leaving 70°

for the third angle


Offline bruski

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« Reply #33 on: February 16, 2019, 11:18:22 PM »

The more that I stare at the triangles the more it looks like a pyramid in 3D.


 


bruski



Offline Cutter

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« Reply #34 on: February 17, 2019, 11:04:44 AM »

 When two lines intersect they make vertical angles



Offline Cutter

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« Reply #35 on: February 20, 2019, 11:05:39 AM »
One more step gives the answer


Offline bruski

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« Reply #36 on: February 20, 2019, 05:02:20 PM »

Anybody!!!!



Offline Sparky_NY

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« Reply #37 on: February 20, 2019, 06:26:55 PM »


Anybody!!!!




Ok    30 degrees


Offline Stirlingking

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« Reply #38 on: February 20, 2019, 11:30:31 PM »


Anybody!!!!




 


29° 55\'.  If that\'s not correct I will give up and wait for 


the answer and solution. My brain can\'t take anymore. 


 


Stirlingking 


Offline Cutter

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« Reply #39 on: February 21, 2019, 01:47:48 PM »


Ok    30 degrees




 


The solution is more important than the answer