Results 1 to 3 of 3

Math Help - can i say this is true?

  1. #1
    Senior Member
    Joined
    Aug 2009
    Posts
    349

    can i say this is true?

    ok i have a problem that im working on and i want to know if i can say the relationship between theta, theta 1 and theta 2 is true? well here is attachment of the problem. basically they want me to find PR such that 0< PR<3 and m<theta is a maximum. so this means im gonna to take the derivative and set equal to zero. well take a look at my work and let me know if im on track or clueless. thanks in advance.maximize the angle.pdf
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,621
    Thanks
    426
    Quote Originally Posted by slapmaxwell1 View Post
    ok i have a problem that im working on and i want to know if i can say the relationship between theta, theta 1 and theta 2 is true? well here is attachment of the problem. basically they want me to find PR such that 0< PR<3 and m<theta is a maximum. so this means im gonna to take the derivative and set equal to zero. well take a look at my work and let me know if im on track or clueless. thanks in advance.maximize the angle.pdf
    sorry, you cannot say that \theta = \theta_1 + \theta_2

    however, you can say that \theta + \theta_1 + \theta_2 = \pi

    so ...

    \theta_1 + \theta_2 = \pi - \theta

    \arctan\left(\frac{2}{R}\right) + \arctan\left(\frac{5}{3-R}\right) = \pi - \theta

    find \frac{d\theta}{dR}


    ... you sure about finding R such that \theta is a minimum ?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Senior Member
    Joined
    Aug 2009
    Posts
    349
    thanks and yes i want to find the maximum...
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 7
    Last Post: October 5th 2011, 12:45 PM
  2. Replies: 1
    Last Post: October 4th 2011, 02:19 AM
  3. help which one is not true
    Posted in the Geometry Forum
    Replies: 1
    Last Post: April 11th 2010, 10:53 PM
  4. True or False. Prove if true show counter example if false.
    Posted in the Differential Geometry Forum
    Replies: 0
    Last Post: March 2nd 2010, 10:54 AM
  5. is that true?
    Posted in the Advanced Statistics Forum
    Replies: 2
    Last Post: October 2nd 2009, 07:00 PM

Search Tags


/mathhelpforum @mathhelpforum