Results 1 to 6 of 6

Math Help - Finding the value of x?

  1. #1
    Newbie
    Joined
    Apr 2008
    Posts
    5

    Finding the value of x?

    Okay I have already done this but I can't remember how to.



    Also can you explain how you found it so I can remember again for future refrence.

    Thanks for whoever helps
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    Joined
    Dec 2008
    From
    Scotland
    Posts
    901
    Quote Originally Posted by JosephLive93 View Post
    Okay I have already done this but I can't remember how to.



    Also can you explain how you found it so I can remember again for future refrence.

    Thanks for whoever helps
    These are similar triangles, so the angles should be identical. Therefore, just equate both expressions to each other and solve for x.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member
    Joined
    Sep 2009
    Posts
    162
    Quote Originally Posted by JosephLive93 View Post
    Okay I have already done this but I can't remember how to.



    Also can you explain how you found it so I can remember again for future refrence.

    Thanks for whoever helps
    I would isolate X to get the degree of the triangle, from there I would use formulas.

    For example: your (3x-10)^o would be x = 10 over 3.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Newbie
    Joined
    Apr 2008
    Posts
    5
    I put in x+40=3x-10 and I ended up with x = 20 and I know the angle isn't 20 degrees by the looks.
    Follow Math Help Forum on Facebook and Google+

  5. #5
    MHF Contributor
    Joined
    Mar 2007
    Posts
    1,240

    Talking

    Geometry Rule 1: Never assume things from the picture!
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Senior Member pacman's Avatar
    Joined
    Jul 2009
    Posts
    448
    x+40=3x-10,

    40 + 10 = 3x - x

    . . . . .
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 10
    Last Post: December 8th 2011, 11:27 AM
  2. Replies: 1
    Last Post: July 3rd 2010, 11:40 PM
  3. Finding a limit. Finding Maclaurin series.
    Posted in the Calculus Forum
    Replies: 2
    Last Post: May 18th 2010, 11:04 PM
  4. Finding the radius, solving, and finding theta?
    Posted in the Trigonometry Forum
    Replies: 2
    Last Post: June 13th 2009, 03:37 PM
  5. Replies: 1
    Last Post: April 9th 2009, 10:02 AM

Search Tags


/mathhelpforum @mathhelpforum