Results 1 to 2 of 2

Math Help - How do I find this point?

  1. #1
    Junior Member
    Joined
    Apr 2010
    Posts
    43

    How do I find this point?

    Quote Originally Posted by earboth View Post
    1. Calculate the length |\overline{PQ}|\approx 831

    2. Calculate all interior angles of the triangle OPQ:
    \angle(POQ) = 6.9105^\circ
    \angle(QPO) = 21.4895^\circ
    \angle(PQO) = 151.6^\circ

    3. Use the Sine rule to calculate the length of x:

    \dfrac x{831}=\dfrac{\sin(21.4893)}{\sin(151.6)}~\implies  ~x \approx 640

    4. The coordinates of Q are Q\left(x \cdot \cos(36.87^\circ)\ ,\  x \cdot \sin(36.87^\circ) \right)
    How do I find this point?-keinortmoeglich.png
    O = (0,0)
    Q = (512,384)
    P = (600,575)

    Instead of finding what point Q is, how would I find out what point P, pretending it was unknown, is? I am unsure how to change the formula, stated above, around to find P.

    Thanks
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Junior Member
    Joined
    Apr 2010
    Posts
    43
    Never mind, I figured it out.


    ~x \approx 210.297

    The coordinates of P are P\left(x \cdot \cos(65.3^\circ) + 512\ ,\  x \cdot \sin(65.3^\circ) + 384\right)
    Last edited by desiderius1; February 13th 2011 at 09:51 PM.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 1
    Last Post: April 6th 2011, 06:44 AM
  2. Singular point: How can I numerically find the point of fracture?
    Posted in the Advanced Applied Math Forum
    Replies: 5
    Last Post: January 4th 2011, 02:30 AM
  3. Replies: 9
    Last Post: July 20th 2010, 08:00 AM
  4. Replies: 1
    Last Post: April 28th 2010, 07:59 PM
  5. Replies: 2
    Last Post: November 5th 2009, 12:05 PM

/mathhelpforum @mathhelpforum