Results 1 to 9 of 9

Math Help - Maximum....HELP

  1. #1
    Junior Member
    Joined
    May 2014
    From
    Atlanta
    Posts
    49

    Angry Maximum....HELP

    How many degrees separate (cos and sin) maximum value?

    So far, I know the maximum values are = 1 but don't know the degree of the maximum value...maybe I am thinking too hard. Please help.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Junior Member
    Joined
    May 2014
    From
    Atlanta
    Posts
    49

    Re: Maximum....HELP

    Also, For what values of θ do the maximum and minimum occur ?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,605
    Thanks
    1574
    Awards
    1

    Re: Maximum....HELP

    Quote Originally Posted by yeatch View Post
    How many degrees separate (cos and sin) maximum value?
    This is a poorly worded question,
    The $\cos(x)$ has its max for $x=0$ for one place.

    The $\sin(x)$ has its max for $x=\pi/2$ for one place.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Junior Member
    Joined
    May 2014
    From
    Atlanta
    Posts
    49

    Re: Maximum....HELP

    this is what the question states

    [ATTACH=CONFIG]30872
    Attached Thumbnails Attached Thumbnails Maximum....HELP-imag1593.jpg  
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Junior Member
    Joined
    May 2014
    From
    Atlanta
    Posts
    49

    Re: Maximum....HELP

    its question a)
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Junior Member
    Joined
    May 2014
    From
    Atlanta
    Posts
    49

    Re: Maximum....HELP

    Maximum....HELP-screenshot-2014-05-10-10.02.13.png this is wat i gotClick image for larger version. 

Name:	Screenshot 2014-05-10 10.02.13.png 
Views:	0 
Size:	261.1 KB 
ID:	30874
    Attached Thumbnails Attached Thumbnails Maximum....HELP-imag1593.jpg  
    Follow Math Help Forum on Facebook and Google+

  7. #7
    MHF Contributor

    Joined
    Apr 2005
    Posts
    15,393
    Thanks
    1327

    Re: Maximum....HELP

    Presumably you know that sin(x)= 1 for x= \pi/2 and that sine has period 2\pi. So sin(\frac{\pi}{2}+ 2k\pi)= 1 for any integer k. Similarly, sin(x)= -1 for x= 3\pi/2 so sin(\frac{3\pi}{2}+ 2k\pi)= -1 for any integer k.
    Follow Math Help Forum on Facebook and Google+

  8. #8
    Junior Member
    Joined
    May 2014
    From
    Atlanta
    Posts
    49

    Re: Maximum....HELP

    So how do I find out separate each maximum value ( above the pic is attach of the question)
    Follow Math Help Forum on Facebook and Google+

  9. #9
    Senior Member
    Joined
    Feb 2014
    From
    United States
    Posts
    467
    Thanks
    192

    Re: Maximum....HELP

    Quote Originally Posted by yeatch View Post
    So how do I find out separate each maximum value ( above the pic is attach of the question)
    I am assuming that you have graphed the two functions as required. I am GUESSING that the answers are to be given in radians.

    Question a(iii) is one of those questions that are so absurdly easy that they confuse you. You say, "They must be asking something deeper than that."

    $Let\ \theta_1\ be\ the\ value\ of\ \theta\ where\ cos(\theta )\ is\ maximum.\ So\ \theta_1 = what.$

    $Let\ \theta_2\ be\ the\ value\ of\ \theta\ where\ sin(\theta )\ is\ maximum.\ So\ \theta_2 = what.$

    The question is merely asking $\theta_2 - \theta_1 = what?$

    The final question makes sense only if the overall question requires answers in radians. Otherwise the answer to what is the value of 50 degrees is 50 degrees.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Maximum Value???
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: January 24th 2010, 04:23 AM
  2. maximum value
    Posted in the Calculus Forum
    Replies: 5
    Last Post: September 20th 2009, 04:11 PM
  3. Maximum value
    Posted in the Pre-Calculus Forum
    Replies: 3
    Last Post: September 5th 2009, 06:03 AM
  4. Maximum Value
    Posted in the Number Theory Forum
    Replies: 4
    Last Post: August 25th 2009, 03:32 AM
  5. Maximum
    Posted in the Calculus Forum
    Replies: 1
    Last Post: November 10th 2008, 03:34 AM

Search Tags


/mathhelpforum @mathhelpforum