Results 1 to 3 of 3

Math Help - trigonometry - modelling and problem solving

  1. #1
    Junior Member
    Joined
    Jan 2013
    From
    Gold coast
    Posts
    30

    trigonometry - modelling and problem solving

    I can't visualise this problem at all!!

    From a point due North of a tower, the angle of elevation to the top of the tower is 45 degrees. From point B, 100M ON A BEARING OF 120 DEGREES FROM a, THE angle of elevation is 26 degrees. Find the height of the tower.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Junior Member
    Joined
    Jun 2013
    From
    Bangalore
    Posts
    63
    Thanks
    1

    Re: trigonometry - modelling and problem solving

    Solution: Given h/a=tan 45
    a=h
    h/b=tan26
    b=h/tan26
    b=2.05h
    100=a+b-2abcos 120
    10000=h+(2.05)-2*h*2.05*h
    h=37.1m
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Jun 2013
    From
    Bangalore
    Posts
    63
    Thanks
    1

    Re: trigonometry - modelling and problem solving

    Quote Originally Posted by brosnan123 View Post
    Solution: Given h/a=tan 45
    a=h
    h/b=tan26
    b=h/tan26
    b=2.05h
    100=a+b-2abcos 120
    10000=h+(2.05)-2*h*2.05*h
    h=37.1m
    trigonometry - modelling and problem solving-image-1-.png
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. trigonometry - modelling and problem solving
    Posted in the Trigonometry Forum
    Replies: 0
    Last Post: April 6th 2013, 05:55 PM
  2. Modelling and problem solving
    Posted in the Algebra Forum
    Replies: 2
    Last Post: March 7th 2013, 03:35 AM
  3. Modelling and problem solving
    Posted in the Algebra Forum
    Replies: 1
    Last Post: February 27th 2013, 03:15 PM
  4. Modelling and problem solving
    Posted in the Algebra Forum
    Replies: 1
    Last Post: February 17th 2013, 01:02 PM
  5. Modelling and problem solving
    Posted in the Algebra Forum
    Replies: 1
    Last Post: January 7th 2013, 11:29 PM

Search Tags


/mathhelpforum @mathhelpforum