Hey there Sign in to join this conversationNew here? Join for free

Trigonometry help

Announcements Posted on
Study Help needs new mods! 14-04-2014
Post on TSR and win a prize! Find out more... 10-04-2014
    • Thread Starter
    • 0 followers
    Offline

    ReputationRep:
    Can someone please help me with this question?

    A, B and C are three points which lie in a straight line on horizontal ground.

    Click image for larger version. 

Name:	trigonometry.jpg 
Views:	23 
Size:	7.6 KB 
ID:	145603

    The angle of elevation of T from A is 21.5.
    The angle of elevation of T from C is 13.3.
    AC = 1200 m.
    Calculate the height of the tower.
    • 0 followers
    Offline

    ReputationRep:
    you could try breaking the base edge down into b and 1200-b
    then you can get two equations with two unknowns (b and the height of the tower)
    • 4 followers
    Offline

    ReputationRep:
    Break it down into B and 1200-b and use Tan with the respective angles to find the unknown.

Reply

Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?

    this is what you'll be called on TSR

  2. this can't be left blank
    this email is already registered. Forgotten your password?

    never shared and never spammed

  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. By completing the slider below you agree to The Student Room's terms & conditions and site rules

  2. Slide the button to the right to create your account

    Slide to join now Processing…

    You don't slide that way? No problem.

Updated: May 3, 2012
Article updates
Reputation gems:
You get these gems as you gain rep from other members for making good contributions and giving helpful advice.