Results 1 to 3 of 3

Math Help - another trig problem

  1. #1
    Junior Member
    Joined
    Apr 2008
    Posts
    31

    another trig problem

    What is the altitude of an equilateral triangle with side of 4.0m?

    ok I know all sides and angles are equal. so i drew a triangle with all sides of 4.0 and all angles of 90. then I divided it vertically to get the altitude. which would give me a side of 4.0m, a side of 2.0m, a 90 angle and a 45 angle. I do not know how to set this up to solve. i am looking for the hypotenuse but just can't seem to find the right way to set up
    thanks!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    o_O
    o_O is offline
    Primero Espada
    o_O's Avatar
    Joined
    Mar 2008
    From
    Canada
    Posts
    1,407
    I think you mean the angles all are 60 degrees, not 90. Anyway, if you draw the altitude and focus on the right side of the equilateral triangle, you should see that: \sin 60^{\circ} = \frac{x}{4} where x is your altitude. You should be able to solve for x.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Apr 2008
    Posts
    31
    got it thanks
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Trig word problem - solving a trig equation.
    Posted in the Trigonometry Forum
    Replies: 6
    Last Post: March 14th 2011, 08:07 AM
  2. Replies: 3
    Last Post: January 2nd 2011, 09:20 PM
  3. trig problem
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: May 13th 2009, 07:28 PM
  4. trig problem
    Posted in the Trigonometry Forum
    Replies: 3
    Last Post: December 10th 2008, 05:23 AM
  5. trig problem
    Posted in the Math Topics Forum
    Replies: 2
    Last Post: April 1st 2008, 03:16 AM

Search Tags


/mathhelpforum @mathhelpforum