Results 1 to 2 of 2

Math Help - word problem Trigonometry

  1. #1
    Junior Member
    Joined
    Feb 2009
    Posts
    46

    word problem Trigonometry

    Hello, me again! and I need ur help!

    In summary octupus ride
    one revolution=60 seconds
    max 4m above ground
    min 1 m above ground
    h in metres above ground can be modelled by
    h=asin (kt) +c where t=time in seconds

    question?

    what is the desired period of the fxn?
    my answer: I just assumed its 60 seconds? am I right

    Determin the value of K that results in the period desired

    so for amplitude I got 3/2 and vertical translation 5/2

    therefore:

    h=3/2 sink (60) +5/2

    im stuck. I have have no idea how to solve for K, since there is two varialble. any hints is appreciated!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,694
    Thanks
    450
    Quote Originally Posted by jepal View Post
    Hello, me again! and I need ur help!

    In summary octupus ride
    one revolution=60 seconds
    max 4m above ground
    min 1 m above ground
    h in metres above ground can be modelled by
    h=asin (kt) +c where t=time in seconds

    question?

    what is the desired period of the fxn?
    my answer: I just assumed its 60 seconds? am I right

    Determin the value of K that results in the period desired

    so for amplitude I got 3/2 and vertical translation 5/2

    therefore:

    h=3/2 sink (60) +5/2

    im stuck. I have have no idea how to solve for K, since there is two varialble. any hints is appreciated!
    k = \frac{2\pi}{T} , where T is the period
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Trigonometry Word Problem ...
    Posted in the Trigonometry Forum
    Replies: 6
    Last Post: June 12th 2009, 01:00 PM
  2. Trigonometry word problem
    Posted in the Trigonometry Forum
    Replies: 3
    Last Post: February 26th 2009, 07:58 PM
  3. trigonometry word problem
    Posted in the Trigonometry Forum
    Replies: 3
    Last Post: October 7th 2008, 03:14 PM
  4. trigonometry word problem
    Posted in the Trigonometry Forum
    Replies: 5
    Last Post: February 19th 2008, 05:48 PM
  5. Trigonometry word problem
    Posted in the Trigonometry Forum
    Replies: 11
    Last Post: October 23rd 2007, 12:09 PM

Search Tags


/mathhelpforum @mathhelpforum