1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Solving a triangle.

  1. Aug 26, 2011 #1
    1. The problem statement, all variables and given/known data
    Solve the following right triangle.
    b=17.8m and theta = 65 degrees. (Right angle is at bottom left, C is hypotenuse, A is bottom leg, B is left leg, theta is opposite of B).
    Solve for a & c


    2. Relevant equations



    3. The attempt at a solution
    a= 8.3m
    c= 42.118m

    But wouldn't that make the triangle not work?
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Aug 26, 2011 #2

    PeterO

    User Avatar
    Homework Helper

    Your a value is good. Your C value is wrong???? Calculator error [ie you pushed the wrong buttons or used the wrong functions]
     
  4. Aug 26, 2011 #3

    phinds

    User Avatar
    Gold Member
    2016 Award

    by "attempt at a solution" it means SHOW YOUR WORK.

    Can't tell where you went wrong if you just give the answer you got
     
  5. Aug 26, 2011 #4

    cepheid

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Yes, that cannot be a right triangle. Your answers don't obey Pythagoras, since in your case,
    a2 + b2 ≠ c2.

    So, you must have messed up somewhere. You're going to have to show your work if you want us to help you figure out where you went wrong.

    By the way, for future reference, this type of thread should be in the "Precalculus Mathematics" forum, not Introductory Physics (since it is, in fact, pre-calculus math, and not intro physics).
     
  6. Aug 26, 2011 #5
    I got 19.64m for my new c
     
  7. Aug 26, 2011 #6

    cepheid

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Well good for you. Again, if you expect any useful feedback from us, you have to show your work. I'm not sure what part of that you didn't understand.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Solving a triangle.
  1. Solve This (Replies: 3)

  2. Solve this! (Replies: 4)

  3. Vectors triangle (Replies: 1)

Loading...