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Jeopardy gets slope degree/percent wrong



 
 
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  #11  
Old July 6th 16, 07:33 AM posted to rec.skiing.alpine
Richard Henry
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Posts: 3,756
Default Jeopardy gets slope degree/percent wrong

On Tuesday, July 5, 2016 at 8:43:26 PM UTC-7, The Real Bev wrote:
On 07/05/2016 03:30 PM, Richard Henry wrote:
On Tuesday, July 5, 2016 at 2:51:48 PM UTC-7, The Real Bev wrote:
On 07/05/2016 12:16 PM, Richard Henry wrote:
On Tuesday, July 5, 2016 at 11:56:14 AM UTC-7, wrote:
On Tuesday, 5 July 2016 09:57:33 UTC-7, The Real Bev wrote:

Or, for the mathematically-challenged, multiply or divide by 2.

--
Cheers, Bev

Huh??? 45 degres = 100 % hows that a multiply/divide by 2?

http://www.greenbeltconsulting.com/a...tionships.html

That's all the math some people can handle.

No ****. I'll try to figure out what I was thinking about in a minute
or so. Maybe...


It works some of the time - for 35 degrees, slope is 70 percent.

Just be thankful they weren't trying to measure the angle in radians.


ROUGHLY half or double. Granted, precision counts for a lot. Still...

--
Cheers, Bev
There are 10 types of people in this world,
those who understand binary and those who don't.


From 0 to 20 degrees, tan() is also roughly the same as sin(), so you throw that page out of your CRC math tables.
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  #12  
Old July 6th 16, 07:35 AM posted to rec.skiing.alpine
Richard Henry
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Posts: 3,756
Default Jeopardy gets slope degree/percent wrong

On Tuesday, July 5, 2016 at 8:43:26 PM UTC-7, The Real Bev wrote:
On 07/05/2016 03:30 PM, Richard Henry wrote:
On Tuesday, July 5, 2016 at 2:51:48 PM UTC-7, The Real Bev wrote:
On 07/05/2016 12:16 PM, Richard Henry wrote:
On Tuesday, July 5, 2016 at 11:56:14 AM UTC-7, wrote:
On Tuesday, 5 July 2016 09:57:33 UTC-7, The Real Bev wrote:

Or, for the mathematically-challenged, multiply or divide by 2.

--
Cheers, Bev

Huh??? 45 degres = 100 % hows that a multiply/divide by 2?

http://www.greenbeltconsulting.com/a...tionships.html

That's all the math some people can handle.

No ****. I'll try to figure out what I was thinking about in a minute
or so. Maybe...


It works some of the time - for 35 degrees, slope is 70 percent.

Just be thankful they weren't trying to measure the angle in radians.


ROUGHLY half or double. Granted, precision counts for a lot. Still...

--
Cheers, Bev
There are 10 types of people in this world,
those who understand binary and those who don't.


From 0 to 20 degrees, tan() is also roughly the same as sin(), so you throw that page out of your CRC math tables.
  #13  
Old July 6th 16, 02:16 PM posted to rec.skiing.alpine
pigo[_2_]
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Posts: 2,376
Default Jeopardy gets slope degree/percent wrong

On Tuesday, July 5, 2016 at 9:18:32 AM UTC-6, Richard Henry wrote:
On Tuesday, July 5, 2016 at 5:56:39 AM UTC-7, pigo wrote:
On Tuesday, July 5, 2016 at 12:52:52 AM UTC-6, Richard Henry wrote:
I recall discussions here long ago about the difference between slope angle measurements in degrees and percent. Tonight on Jeopardy in the combination of a clue and correct response, they said Talladega race course turns are banked at a maximum of 33 percent. According to NASCAR, the steeper curves are banked at 33 degrees, or about 65 percent.


I remember the original topic. If I remember correctly it had more to do with blowhards than anything else. But this is RSA so.........oh well.

But what is 100%? Is a horizontal line 0 and the vertical of a 90 deg. 100%? "per cent" of what? 360? Never gave it much though. I remember a section of "the peak" at Park City that was supposed to be 54 deg.(?). It seemed straight down.


It is 100% when the amount of rise (or fall, in the case of skiing) is the same as the amount moved forward. The angle where that happens is 45 degrees. There are very few ski slopes that approach that steepness because snow generally won't stay on it.

The mathematical formula is 100 * tan(angle) -- the tangent of the angle multiplied by 100 to convert to percent.


In my world that's a 12/12 pitched roof. Anything over an 8 needed to have stickers nailed down to walk on without sliding off. And 8 was scary. Kinda depended on the distance from the edge of the roof to the ground.

I think that the rock structure and wind were enough to hold the snow on 51/50. I don't think I ever skied it when it was not unbreakable windblown. *Soft* but you weren't going to break through it.
  #14  
Old July 6th 16, 03:05 PM posted to rec.skiing.alpine
lal_truckee
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Posts: 1,348
Default Jeopardy gets slope degree/percent wrong

On 7/6/16 12:33 AM, Richard Henry wrote:
From 0 to 20 degrees, tan() is also roughly the same as sin(), so you throw that page out of your CRC math tables.


My copy of the CRC Math Tables was purchased by my mother in 1939 when
she was a freshman math student at Berkeley. Can't tear pages from an
heirloom. If I did she'd notice and ask me about it.

BTW, funny how the numbers don't change with time. Must be some sort of
universal attribute.
  #15  
Old July 6th 16, 03:21 PM posted to rec.skiing.alpine
The Real Bev[_4_]
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Posts: 1,233
Default Jeopardy gets slope degree/percent wrong

On 07/06/2016 07:16 AM, pigo wrote:
On Tuesday, July 5, 2016 at 9:18:32 AM UTC-6, Richard Henry wrote:

The mathematical formula is 100 * tan(angle) -- the tangent of the
angle multiplied by 100 to convert to percent.


In my world that's a 12/12 pitched roof. Anything over an 8 needed to
have stickers nailed down to walk on without sliding off. And 8 was
scary. Kinda depended on the distance from the edge of the roof to
the ground.


BIL was a roofer in New York. He told us about "chicken ladders".

--
Cheers, Bev
"Mr Panetta also revealed that the US Navy Seals made the final
decision to kill bin Laden rather than the president."
--S. Swinford, The Telegraph
[Aside from that minor error, those Seals did a fantastic job!] --Bev
  #16  
Old July 6th 16, 03:42 PM posted to rec.skiing.alpine
BrritSki[_3_]
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Posts: 209
Default Jeopardy gets slope degree/percent wrong

On 06/07/2016 17:05, lal_truckee wrote:
On 7/6/16 12:33 AM, Richard Henry wrote:
From 0 to 20 degrees, tan() is also roughly the same as sin(), so you
throw that page out of your CRC math tables.


My copy of the CRC Math Tables was purchased by my mother in 1939 when
she was a freshman math student at Berkeley. Can't tear pages from an
heirloom. If I did she'd notice and ask me about it.


My copy of school log tables from 1964 have THURSDAY written in large
capital letters on the back. It was the maths lesson following afternoon
break where I'd concussed myself somehow and I kept asking my classmate
what day it was until he eventually wrote it down.

He eventually realised something was wrong and I was taken home where I
read the evening paper about 10 times, and went up to see if my bike was
OK after my "fall" about 20 times before I eventually was taken to
hospital and kept in for a couple of nights :/


  #17  
Old July 6th 16, 03:54 PM posted to rec.skiing.alpine
Richard Henry
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Posts: 3,756
Default Jeopardy gets slope degree/percent wrong

On Wednesday, July 6, 2016 at 8:05:30 AM UTC-7, lal_truckee wrote:
On 7/6/16 12:33 AM, Richard Henry wrote:
From 0 to 20 degrees, tan() is also roughly the same as sin(), so you throw that page out of your CRC math tables.


My copy of the CRC Math Tables was purchased by my mother in 1939 when
she was a freshman math student at Berkeley. Can't tear pages from an
heirloom. If I did she'd notice and ask me about it.

BTW, funny how the numbers don't change with time. Must be some sort of
universal attribute.


I got my copy in 1965 when I started my first attempt at college. By the time of my college restart in 1977, almost everything of use in there could be found in a pocket calculator. Now the calculator function of my cell phone does all that work.

Now even the trig relations and integral equivalents are built into free online pages.
  #18  
Old July 7th 16, 12:43 PM posted to rec.skiing.alpine
pigo[_2_]
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Posts: 2,376
Default Jeopardy gets slope degree/percent wrong

On Wednesday, July 6, 2016 at 9:21:11 AM UTC-6, The Real Bev wrote:

BIL was a roofer in New York. He told us about "chicken ladders".


8/12 were the worst. Because you *can* walk on them. If all is dry, free of sawdust, and debris, you can get around. But it's really easy to go off. Sorta like when something weighs a few hundred pounds you think you can get it up there so you try. Best if the beam weighs 40,000 lbs so you just order the crane.
  #19  
Old July 20th 16, 02:05 PM posted to rec.skiing.alpine
Richard Henry
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Posts: 3,756
Default Jeopardy gets slope degree/percent wrong

On Wednesday, July 6, 2016 at 8:42:32 AM UTC-7, BrritSki wrote:
On 06/07/2016 17:05, lal_truckee wrote:
On 7/6/16 12:33 AM, Richard Henry wrote:
From 0 to 20 degrees, tan() is also roughly the same as sin(), so you
throw that page out of your CRC math tables.


My copy of the CRC Math Tables was purchased by my mother in 1939 when
she was a freshman math student at Berkeley. Can't tear pages from an
heirloom. If I did she'd notice and ask me about it.


My copy of school log tables from 1964 have THURSDAY written in large
capital letters on the back. It was the maths lesson following afternoon
break where I'd concussed myself somehow and I kept asking my classmate
what day it was until he eventually wrote it down.

He eventually realised something was wrong and I was taken home where I
read the evening paper about 10 times, and went up to see if my bike was
OK after my "fall" about 20 times before I eventually was taken to
hospital and kept in for a couple of nights :/


The last hard fall I had skiing included a concussion - a whiplash onto frozen surface early on a spring-skiing day after yesterday's wet slop froze overnight. Even worse - I had borrowed my son's snowboarding helmet, but decided not to wear it that day because it had been uncomfortably hot the day before.

for some reason, this is starting to look like one of those old-fashioned skiing threads
  #20  
Old July 20th 16, 03:45 PM posted to rec.skiing.alpine
The Real Bev[_4_]
external usenet poster
 
Posts: 1,233
Default Jeopardy gets slope degree/percent wrong

On 07/20/2016 07:05 AM, Richard Henry wrote:
On Wednesday, July 6, 2016 at 8:42:32 AM UTC-7, BrritSki wrote:
On 06/07/2016 17:05, lal_truckee wrote:
On 7/6/16 12:33 AM, Richard Henry wrote:
From 0 to 20 degrees, tan() is also roughly the same as sin(), so you
throw that page out of your CRC math tables.

My copy of the CRC Math Tables was purchased by my mother in 1939 when
she was a freshman math student at Berkeley. Can't tear pages from an
heirloom. If I did she'd notice and ask me about it.


My copy of school log tables from 1964 have THURSDAY written in large
capital letters on the back. It was the maths lesson following afternoon
break where I'd concussed myself somehow and I kept asking my classmate
what day it was until he eventually wrote it down.

He eventually realised something was wrong and I was taken home where I
read the evening paper about 10 times, and went up to see if my bike was
OK after my "fall" about 20 times before I eventually was taken to
hospital and kept in for a couple of nights :/


The last hard fall I had skiing included a concussion - a whiplash onto frozen surface early on a spring-skiing day after yesterday's wet slop froze overnight. Even worse - I had borrowed my son's snowboarding helmet, but decided not to wear it that day because it had been uncomfortably hot the day before.

for some reason, this is starting to look like one of those old-fashioned skiing threads


OK, let's keep it going. Although I always wore a helmet when I was
motorcycling and bicycling, and actually have a ski helmet, I don't wear
one skiing. The myriad falls I've had involved body parts not protected
by a helmet, so so far, so good.

Maybe I'd wear it if I painted it day-glo orange...

--
Cheers, Bev
"I read somewhere that 77 per cent of all the mentally ill live in
poverty. Actually, I'm more intrigued by the 23 per cent who are
apparently doing quite well for themselves." -- Emo Philips
 




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