Bodybuilding.com Information Motivation Supplementation
in:

    The World’s #1 Bodybuilding And Fitness Forum - Save Up To 50% Off Retail Prices In Our Bodybuilding.com Store!

Reply
Results 1 to 11 of 11
  1. #1
    Banned Ultimus's Avatar
    Join Date: Oct 2007
    Location: Orem, Utah, United States
    Age: 23
    Stats: 5'10", 164 lbs
    Posts: 7,408
    BodyPoints: 6116
    Rep Power: 0
    Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000)
    Visit Ultimus's BodySpace
    Ultimus is offline

    This is the hardest trigonometry problem I've ever seen, reps available.

    Ok I have been studying for my trig exam for 4 hours strait, and I'm on my last problem I can't figure out.

    It says simplify:



    The back of the book says the answer is "1-sin x" but I cant get it simplified that far.
    Reply With Quote

  2. #2
    Registered User BTBAM's Avatar
    Join Date: Feb 2008
    Age: 24
    Stats: 5'8", 182 lbs
    Posts: 6,981
    Rep Power: 17919
    BTBAM has reached the pinnacle! Best possible rank! (+1000000) BTBAM has reached the pinnacle! Best possible rank! (+1000000) BTBAM has reached the pinnacle! Best possible rank! (+1000000) BTBAM has reached the pinnacle! Best possible rank! (+1000000) BTBAM has reached the pinnacle! Best possible rank! (+1000000) BTBAM has reached the pinnacle! Best possible rank! (+1000000) BTBAM has reached the pinnacle! Best possible rank! (+1000000) BTBAM has reached the pinnacle! Best possible rank! (+1000000) BTBAM has reached the pinnacle! Best possible rank! (+1000000) BTBAM has reached the pinnacle! Best possible rank! (+1000000) BTBAM has reached the pinnacle! Best possible rank! (+1000000)
    Visit BTBAM's BodySpace
    BTBAM is offline
    are those 2s?
    Subscribe to The Strength Project :
    http://www.youtube.com/user/olbaid420?feature=mhee

    Read the blog:
    http://thegoodmoodfooddude.blogspot.com/

    Ask me anything about nutrition:
    http://forum.bodybuilding.com/showthread.php?t=162775831
    Reply With Quote

  3. #3
    Banned Ultimus's Avatar
    Join Date: Oct 2007
    Location: Orem, Utah, United States
    Age: 23
    Stats: 5'10", 164 lbs
    Posts: 7,408
    BodyPoints: 6116
    Rep Power: 0
    Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000)
    Visit Ultimus's BodySpace
    Ultimus is offline
    Originally Posted by BTBAM View Post
    are those 2s?
    correct, dividing the X by 2 but not the whole problem
    Reply With Quote

  4. #4
    Registered User MikeDre's Avatar
    Join Date: Jan 2008
    Location: California, United States
    Stats: 5'10", 180 lbs
    Posts: 10,518
    Rep Power: 5400
    MikeDre has reached the pinnacle! Best possible rank! (+1000000) MikeDre has reached the pinnacle! Best possible rank! (+1000000) MikeDre has reached the pinnacle! Best possible rank! (+1000000) MikeDre has reached the pinnacle! Best possible rank! (+1000000) MikeDre has reached the pinnacle! Best possible rank! (+1000000) MikeDre has reached the pinnacle! Best possible rank! (+1000000) MikeDre has reached the pinnacle! Best possible rank! (+1000000) MikeDre has reached the pinnacle! Best possible rank! (+1000000) MikeDre has reached the pinnacle! Best possible rank! (+1000000) MikeDre has reached the pinnacle! Best possible rank! (+1000000) MikeDre has reached the pinnacle! Best possible rank! (+1000000)
    Visit MikeDre's BodySpace
    MikeDre is offline
    Prob goes to Cos^2(x) + Sin^2(X) which goes to 1 then blah blah blah

    I dunno
    Reply With Quote

  5. #5
    Banned SlammaJamma's Avatar
    Join Date: Mar 2003
    Location: NJ, USA
    Age: 30
    Posts: 3,700
    BodyPoints: 602
    Rep Power: 0
    SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000)
    Visit SlammaJamma's BodySpace
    SlammaJamma is offline
    expand what's inside: [cos(x/2) + sin(x/2)^2] - 2sin(x/2)cos(x/2)

    recognize that you have cos(y)^2 + sin(y)^2

    = 1 - 2sin(x/2)cos(x/2)

    recognize that you have a double angle identity on the right

    = 1-sin(x)
    Reply With Quote

  6. #6
    Banned Ultimus's Avatar
    Join Date: Oct 2007
    Location: Orem, Utah, United States
    Age: 23
    Stats: 5'10", 164 lbs
    Posts: 7,408
    BodyPoints: 6116
    Rep Power: 0
    Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000) Ultimus has reached the pinnacle! Best possible rank! (+1000000)
    Visit Ultimus's BodySpace
    Ultimus is offline
    Originally Posted by SlammaJamma View Post
    expand what's inside: [cos(x/2) + sin(x/2)^2] - 2sin(x/2)cos(x/2)

    recognize that you have cos(y)^2 + sin(y)^2

    = 1 - 2sin(x/2)cos(x/2)

    recognize that you have a double angle identity on the right

    = 1-sin(x)
    how did you expand that in the first step?
    Reply With Quote

  7. #7
    Banned SlammaJamma's Avatar
    Join Date: Mar 2003
    Location: NJ, USA
    Age: 30
    Posts: 3,700
    BodyPoints: 602
    Rep Power: 0
    SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000)
    Visit SlammaJamma's BodySpace
    SlammaJamma is offline
    Originally Posted by Ultimus View Post
    how did you expand that in the first step?
    Just expand it like you would anything else. foil I guess

    I put brackets just to show that what's inside reduces to 1
    Reply With Quote

  8. #8
    Will Work For Reps Your Dad's Avatar
    Join Date: Nov 2007
    Age: 62
    Posts: 5,041
    BodyPoints: 8219
    Rep Power: 1024
    Your Dad has reached the pinnacle! Best possible rank! (+1000000) Your Dad has reached the pinnacle! Best possible rank! (+1000000) Your Dad has reached the pinnacle! Best possible rank! (+1000000) Your Dad has reached the pinnacle! Best possible rank! (+1000000) Your Dad has reached the pinnacle! Best possible rank! (+1000000) Your Dad has reached the pinnacle! Best possible rank! (+1000000) Your Dad has reached the pinnacle! Best possible rank! (+1000000) Your Dad has reached the pinnacle! Best possible rank! (+1000000) Your Dad has reached the pinnacle! Best possible rank! (+1000000) Your Dad has reached the pinnacle! Best possible rank! (+1000000) Your Dad has reached the pinnacle! Best possible rank! (+1000000)
    Visit Your Dad's BodySpace
    Your Dad is offline
    Originally Posted by Ultimus View Post
    Ok I have been studying for my trig exam for 4 hours strait, and I'm on my last problem I can't figure out.

    It says simplify:



    The back of the book says the answer is "1-sin x" but I cant get it simplified that far.
    This is basically like proving the identity...except without the right hand side given.

    Sin(x/2) = +- sq root( 1-cosx/2)
    Cos(x/2) = +- sq root (1+cosx/2)

    Since its squared the roots cancel out and all you have to do is combine after getting the lcd and you wind up with 1-sinx.
    http://www.miscipedia.net/wiki1/index.php5?title=Your_Dad

    Be reality, brah.

    "My Dad Is In Heaven Brah..." - rippedandforty :'(...lowlz brb crying over username.
    Reply With Quote

  9. #9
    I Want to Believe USAviator's Avatar
    Join Date: Dec 2006
    Location: Houston, Texas, United States
    Stats: 6'2", 220 lbs
    Posts: 13,012
    BodyPoints: 17673
    Rep Power: 14004
    USAviator has reached the pinnacle! Best possible rank! (+1000000) USAviator has reached the pinnacle! Best possible rank! (+1000000) USAviator has reached the pinnacle! Best possible rank! (+1000000) USAviator has reached the pinnacle! Best possible rank! (+1000000) USAviator has reached the pinnacle! Best possible rank! (+1000000) USAviator has reached the pinnacle! Best possible rank! (+1000000) USAviator has reached the pinnacle! Best possible rank! (+1000000) USAviator has reached the pinnacle! Best possible rank! (+1000000) USAviator has reached the pinnacle! Best possible rank! (+1000000) USAviator has reached the pinnacle! Best possible rank! (+1000000) USAviator has reached the pinnacle! Best possible rank! (+1000000)
    Visit USAviator's BodySpace
    USAviator is offline
    The answer is one my son.


    well in short its 1 sin...but its really


    1.000000000000000000000000000000000000000000000000 0000000000000000000000001
    The Truth Is Out There

    -Ron Paul 2012-

    I'm in the Danger Zone.
    Reply With Quote

  10. #10
    Registered User FltMech's Avatar
    Join Date: Mar 2008
    Age: 33
    Posts: 513
    Rep Power: 13
    FltMech is a name known to all. (+5000) FltMech is a name known to all. (+5000) FltMech is a name known to all. (+5000) FltMech is a name known to all. (+5000) FltMech is a name known to all. (+5000) FltMech is a name known to all. (+5000) FltMech is a name known to all. (+5000) FltMech is a name known to all. (+5000) FltMech is a name known to all. (+5000) FltMech is a name known to all. (+5000) FltMech is a name known to all. (+5000)
    Visit FltMech's BodySpace
    FltMech is offline
    Reply With Quote

  11. #11
    Banned SlammaJamma's Avatar
    Join Date: Mar 2003
    Location: NJ, USA
    Age: 30
    Posts: 3,700
    BodyPoints: 602
    Rep Power: 0
    SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000) SlammaJamma has a brilliant future. Third best rank! (+40000)
    Visit SlammaJamma's BodySpace
    SlammaJamma is offline
    Originally Posted by FltMech View Post
    rofl what's that from?
    Reply With Quote

Reply

Posting Permissions

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

Home Store Products Careers Help Contact Us Terms of Use Checkout