Page 1 of 2 12 LastLast
Results 1 to 20 of 27

Thread: A stupid question.

  1. #1
    Почтенный гражданин
    Join Date
    Mar 2005
    Posts
    458
    Rep Power
    10

    A stupid question.

    A question to non-Russians. I've read some article. I don't believe it, but... it really awoke my interest. Strong interest. I know that my doubt may offend you, but I can't suffer any more. Execuse me, if you find my question insulting.

    OK, here's the most stupid question I've ever asked:
    Do you know why sin30 = 0,5?
    My English isn't so good, зато с русским все в порядке ))
    I'll be very thankful, if you correct my mistakes.

  2. #2
    Старший оракул
    Join Date
    Mar 2005
    Location
    c:\earth\usa\minnesota
    Posts
    819
    Rep Power
    10
    Um...this is a mathematical operation.

    The sine (abbreviated "sin") of an angle measurement of 30 degrees is equal to 0.5

    sin(30)=0.5

    This is the only way I can make sense of that....

    LOL...how did you come about this?

  3. #3
    Завсегдатай
    Join Date
    Sep 2004
    Location
    las vegas
    Posts
    1,687
    Rep Power
    11
    sin(30) = 0.5

    The sine of a 30 degree angle is 0.5.
    That means if you shoot something at a 30 degree angle, the height attained is half of the distance covered. (But that is assuming there is no gravity.)
    Какая разница, умереть богатым или бедным?

    Какой толк от богатства если ты не счастлив.

  4. #4
    Завсегдатай kalinka_vinnie's Avatar
    Join Date
    Dec 2004
    Location
    Sunnyvale, Cali
    Posts
    5,771
    Rep Power
    15


    Because, my friend, when a triangle has the angle of 30 degrees, the hypotenus is double as long as the opposite! ALWAYS! And then the ratio will always be 1/2!

    sin X = Opposite / Hypotenus

    PS: Opposite is the line which is opposite the angle X and hypotenus is that really long line opposite the 90 deg
    Hei, rett norsken min og du er død.
    I am a notourriouse misspeller. Be easy on me.
    Пожалуйста! Исправляйте мои глупые ошибки (но оставьте умные)!
    Yo hablo español mejor que tú.
    Trusnse kal'rt eturule sikay!!! ))

  5. #5
    Старший оракул
    Join Date
    Mar 2005
    Location
    c:\earth\usa\minnesota
    Posts
    819
    Rep Power
    10
    I am impressed with your math skills!

  6. #6
    Завсегдатай kalinka_vinnie's Avatar
    Join Date
    Dec 2004
    Location
    Sunnyvale, Cali
    Posts
    5,771
    Rep Power
    15
    Well, it is kind of my job to know math... :P

    Anyway, how do you spell sinus / sine / sin in Russian? Do you use latin letters or what?
    Hei, rett norsken min og du er død.
    I am a notourriouse misspeller. Be easy on me.
    Пожалуйста! Исправляйте мои глупые ошибки (но оставьте умные)!
    Yo hablo español mejor que tú.
    Trusnse kal'rt eturule sikay!!! ))

  7. #7
    Старший оракул
    Join Date
    Mar 2005
    Location
    c:\earth\usa\minnesota
    Posts
    819
    Rep Power
    10
    синус

  8. #8
    Почтенный гражданин
    Join Date
    Mar 2005
    Location
    Матун-Чарлстон, Иллинойс.
    Posts
    332
    Rep Power
    10
    Ha! That was on my Algebra final this year! SohCahToa! I think, I can't remember. I wrote it on my hand.
    I come to represent and carve my name within your chest.

  9. #9
    Старший оракул
    Join Date
    Mar 2005
    Location
    c:\earth\usa\minnesota
    Posts
    819
    Rep Power
    10
    SohCahToa is what got me through those courses...I can never forget it.

  10. #10
    Почтенный гражданин
    Join Date
    Mar 2005
    Location
    Матун-Чарлстон, Иллинойс.
    Posts
    332
    Rep Power
    10
    I miss my Algebra class! I had so much fun there! Even if I can't really remember much. -Wipes tear-

    Edit:
    Why am I capitalizing Algebra?
    I come to represent and carve my name within your chest.

  11. #11
    N
    N is offline
    Почтенный гражданин
    Join Date
    Oct 2003
    Location
    Moscow
    Posts
    377
    Rep Power
    11
    Вопрос, видимо, навеян этой статьёй
    http://nauka.relis.ru/05/0412/05412020.htm

  12. #12
    Почтенный гражданин
    Join Date
    Mar 2005
    Posts
    458
    Rep Power
    10
    sin X = Opposite / Hypotenus
    OK, kalinka, what must I do when X > 180? sin270 = -1, but can you give me a triangle with 270 degrees angle?
    My English isn't so good, зато с русским все в порядке ))
    I'll be very thankful, if you correct my mistakes.

  13. #13
    Почтенный гражданин
    Join Date
    Mar 2005
    Posts
    458
    Rep Power
    10
    Quote Originally Posted by N
    Вопрос, видимо, навеян этой статьёй
    http://nauka.relis.ru/05/0412/05412020.htm
    You're right!
    But just understand, I don't want to offend somebody. The article describes such fantastic things, unbelievable things! So unbelievable for me, that my interest doesn't allow me to be calm!
    My English isn't so good, зато с русским все в порядке ))
    I'll be very thankful, if you correct my mistakes.

  14. #14
    DDT
    DDT is offline
    Завсегдатай DDT's Avatar
    Join Date
    Jul 2004
    Location
    I have given up the Gambling, the Wine and the Cows!.. I'm back now! ....nope Im gone again!
    Posts
    3,364
    Rep Power
    14
    Sorry Pranky but when they started to mix numbers with the alphabet they lost me.
    Let me be a free man, free to travel, free to stop, free to work, free to trade where I choose, free to choose my own teachers, free to follow the religion of my fathers, free to talk, think and act for myself. - Chief Joseph, Nez Perce

  15. #15
    Завсегдатай kalinka_vinnie's Avatar
    Join Date
    Dec 2004
    Location
    Sunnyvale, Cali
    Posts
    5,771
    Rep Power
    15
    Quote Originally Posted by pranki
    sin X = Opposite / Hypotenus
    OK, kalinka, what must I do when X > 180? sin270 = -1, but can you give me a triangle with 270 degrees angle?
    Well, ok, this method it only works for < 90 degrees

    For larger values... you have to learn... the... dreaded... UNIT CIRCLE (dramatic music)



    Hint: - If you are doing a sine of the angle, look for the intersection from the unit circle's circumfrance to the vertical line (for cosinus to the horizontal line)
    Hei, rett norsken min og du er død.
    I am a notourriouse misspeller. Be easy on me.
    Пожалуйста! Исправляйте мои глупые ошибки (но оставьте умные)!
    Yo hablo español mejor que tú.
    Trusnse kal'rt eturule sikay!!! ))

  16. #16
    Почтенный гражданин
    Join Date
    Mar 2005
    Posts
    458
    Rep Power
    10
    kalinka, you're quite right!!! Now I know, that the article lies!

    But let's think about the following. How does your calculator get values of sine? Does it draw the unit circle (thanks for the term, I didn't know how does единичная окружность sound in English) in its memory, look for intersections etc?
    My English isn't so good, зато с русским все в порядке ))
    I'll be very thankful, if you correct my mistakes.

  17. #17
    Властелин
    Join Date
    May 2005
    Location
    french camp
    Posts
    1,234
    Rep Power
    11
    Quote Originally Posted by pranki
    The article describes such fantastic things, unbelievable things! So unbelievable for me, that my interest doesn't allow me to be calm!
    What's so unbelievable about it? *Shrug*
    I've got a TV, and I'm not afraid to use it

  18. #18
    Властелин
    Join Date
    Jun 2005
    Posts
    1,348
    Rep Power
    11
    Quote Originally Posted by pranki
    kalinka, you're quite right!!! Now I know, that the article lies!

    But let's think about the following. How does your calculator get values of sine? Does it draw the unit circle (thanks for the term, I didn't know how does единичная окружность sound in English) in its memory, look for intersections etc?
    pranki, do _you_ really know how exactly it gets the values? i suspect it might well depend on the calculator (unless there is one cheap chinese chip that everyone uses)

  19. #19
    Почтенный гражданин
    Join Date
    Mar 2005
    Posts
    458
    Rep Power
    10
    Quote Originally Posted by laxxy
    pranki, do _you_ really know how exactly it gets the values? i suspect it might well depend on the calculator (unless there is one cheap chinese chip that everyone uses)
    I just wanted to get the most common definition of sine.

    OK, I call off my last question. It isn't fairly, because it is learned in univesity departments, which are dedicated to mathematics, and ordinary people don't have to know this.
    I'm sorry.
    My English isn't so good, зато с русским все в порядке ))
    I'll be very thankful, if you correct my mistakes.

  20. #20
    Старший оракул
    Join Date
    Nov 2004
    Location
    San Diego, CA
    Posts
    798
    Rep Power
    10
    Aah!!! Get this crap out of my face! I had to take 22 semesters of Advanced Algebra / Advanced Calc in school! I've spent years erasing this all from my memory!
    -Fantom

    ps- TriggerHappyJack, I have the habit of capitalizing Algebra and Calc also, maybe it's our nature to capitalize things that suck a lot...!
    "Alright, brain, I don't like you and you don't like me, so let's just figure this out and I'll get back to killing you with beer."

Page 1 of 2 12 LastLast

Similar Threads

  1. Very basic and perhaps stupid question "Net" and "ne"
    By slylie in forum Grammar and Vocabulary
    Replies: 4
    Last Post: December 12th, 2009, 11:00 AM
  2. Really stupid question
    By kalinka_vinnie in forum Grammar and Vocabulary
    Replies: 25
    Last Post: September 27th, 2006, 01:41 PM
  3. a stupid question
    By Chuvak in forum Learn English - Грамматика, переводы, словарный запас
    Replies: 19
    Last Post: June 2nd, 2006, 04:10 PM
  4. Stupid question about verbal agreement.
    By scotcher in forum Grammar and Vocabulary
    Replies: 19
    Last Post: July 27th, 2005, 07:38 AM
  5. Russian alphabet in cursive? -stupid question-
    By Whit in forum Getting Started with Russian
    Replies: 15
    Last Post: July 27th, 2004, 09:17 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


Russian Lessons                           

Russian Tests and Quizzes            

Russian Vocabulary