Visit the Ironworks Gaming Website Email the Webmaster Graphics Library Rules and Regulations Help Support Ironworks Forum with a Donation to Keep us Online - We rely totally on Donations from members Donation goal Meter

Ironworks Gaming Radio

Ironworks Gaming Forum

Go Back   Ironworks Gaming Forum > Ironworks Gaming Forums > General Discussion > General Conversation Archives (11/2000 - 01/2005)

 
 
Thread Tools Search this Thread
Old 11-10-2002, 06:35 AM   #1
Neb
Account deleted by Request
 

Join Date: May 17, 2001
Location: .
Age: 38
Posts: 8,802
Can anyone tell me at what point the line y=cos(x) is zero? The only thing that I've got to calculate it with is a calculator which I suspect isn't being too precise about it's values.
Neb is offline  
Old 11-10-2002, 06:41 AM   #2
Lord of Alcohol
Xanathar Thieves Guild
 

Join Date: January 8, 2001
Location: Charlotte,NC
Age: 60
Posts: 4,570
y=cos(x) right at this.............................................. .................................................. .................................................. .............................. .................................................. ........................point. How could you not know that? Must be those redneck Denmark schools [img]tongue.gif[/img] Sorry Nob [img]smile.gif[/img]
__________________
No
Lord of Alcohol is offline  
Old 11-10-2002, 06:44 AM   #3
Lord Shield
Guest
 

Posts: n/a
90
 
Old 11-10-2002, 06:55 AM   #4
Neb
Account deleted by Request
 

Join Date: May 17, 2001
Location: .
Age: 38
Posts: 8,802
Excellent. Thanks for the aid, LS.
Neb is offline  
Old 11-10-2002, 10:20 AM   #5
whacky
Emerald Dragon
 

Join Date: July 16, 2002
Location: The Abyss
Age: 36
Posts: 904
90,270,450,630,810,990 ...... you kinda get the idea ..... [img]smile.gif[/img]
whacky is offline  
Old 11-10-2002, 01:14 PM   #6
andrewas
Harper
 

Join Date: October 2, 2001
Location: Aberdeen, Scotland
Age: 42
Posts: 4,774
Quote:
Originally posted by whacky:
90,270,450,630,810,990 ...... you kinda get the idea ..... [img]smile.gif[/img]
.5 pi, 1.5pi and every rotation thereof.

Or havent you done radians yet?

For what its worth, calculators are precice at the zero points of a trig function. But only then.
__________________
[img]\"http://www.sighost.us/members/Zvijer/andrewas.gif\" alt=\" - \" />
andrewas is offline  
Old 11-10-2002, 05:21 PM   #7
whacky
Emerald Dragon
 

Join Date: July 16, 2002
Location: The Abyss
Age: 36
Posts: 904
Quote:
Originally posted by andrewas:
quote:
Originally posted by whacky:
90,270,450,630,810,990 ...... you kinda get the idea ..... [img]smile.gif[/img]
.5 pi, 1.5pi and every rotation thereof.

Or havent you done radians yet?

For what its worth, calculators are precice at the zero points of a trig function. But only then.
[/QUOTE]I've done radians, hmm i wonder why i couldnt give the answer in radians .....
whacky is offline  
Old 11-10-2002, 09:20 PM   #8
Azred
Drow Priestess
 

Join Date: March 13, 2001
Location: a hidden sanctorum high above the metroplex
Age: 54
Posts: 4,037
Question Mark

whacky and andrewas are completely correct. cos(x) = 0 for x = ((2k + 1)/2) * pi, where k is any integer value and x is a radian measure.

Calculators are funny. You can enter any number for a degree measure and it will give you the cosine of that number; however, if you enter any number in between -1 and 1 you will get the inverse cosine only for degrees between -90 and +90 degrees.
__________________
Everything may be explained by a conspiracy theory. All conspiracy theories are true.

No matter how thinly you slice it, it's still bologna.
Azred is offline  
Old 11-10-2002, 11:16 PM   #9
Night Stalker
Lord Ao
 

Join Date: June 24, 2002
Location: Nevernever Land
Age: 49
Posts: 2,002
the term "any integer" implies this, but remember that k can be negative as well.

e.g. -pi/2, -3pi/2 , ....
__________________
[url]\"http://www.duryea.org/pinky/gurkin.wav\" target=\"_blank\">AYPWIP?</a> .... <img border=\"0\" alt=\"[1ponder]\" title=\"\" src=\"graemlins/1ponder.gif\" /> <br />\"I think so Brain, but isn\'t a cucumber that small called a gherkin?\"<br /><br />Shut UP! Pinky!
Night Stalker is offline  
Old 11-11-2002, 02:08 AM   #10
LennonCook
Jack Burton
 

Join Date: November 10, 2001
Location: Bathurst & Orange, in constant flux
Age: 37
Posts: 5,452
If you`re working in degrees, it`s just the sine curve outset by 90. [img]smile.gif[/img]

So for a single revolution, if sin(0)=0, 180, 360
Then, cos(90) = 0, 180, 360

If cos(0)= 90, 270
Then sin (90)= 90, 270

If you know one, you know the other- the sine of an angle is equal to the cosine of a complimentary angle. [img]smile.gif[/img]
LennonCook is offline  
 


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
WoW related Blind_Prophet Miscellaneous Games (RPG or not) 6 07-13-2007 04:34 PM
Maths Question Callum General Discussion 12 02-13-2006 04:09 PM
Maths Revision Callum General Discussion 21 06-06-2005 10:59 AM
Do You See The Point In Maths Lessons? Beaumanoir General Discussion 25 05-14-2003 05:01 AM
In need for help!!! (TDD Related) Annatar Baldurs Gate II: Shadows of Amn & Throne of Bhaal 8 02-07-2003 02:45 PM


All times are GMT -4. The time now is 02:23 PM.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
©2024 Ironworks Gaming & ©2024 The Great Escape Studios TM - All Rights Reserved