Results 1 to 4 of 4

Math Help - Find the requested function value of θ.

  1. #1
    Newbie
    Joined
    Oct 2007
    Posts
    20

    Find the requested function value of θ.

    Find the requested function value of θ.

    If sin
    θ = 4 over 13, find cos θ

    help plz


    Follow Math Help Forum on Facebook and Google+

  2. #2
    Newbie
    Joined
    Oct 2007
    Posts
    23
    draw a triangle! sin θ = 4/13 so opposite is 4 and hypotenuse is 13. just rearrange pythagoras theorem.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Oct 2007
    Posts
    20

    hmmm

    ok i did 13^2 and 4^ 2

    i got 169 and 16

    do i subtract them from eachother to get 153?

    the answer is supposed to be square root of 153 over 13
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Newbie
    Joined
    Oct 2007
    Posts
    23
    a + b = c
    b => +(c-a)^0.5

    Note: square rooting gives , obviously length is not - so we take the + one.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. [SOLVED] Explanation requested
    Posted in the Differential Equations Forum
    Replies: 2
    Last Post: February 12th 2011, 04:36 PM
  2. Verification requested
    Posted in the Calculus Forum
    Replies: 2
    Last Post: January 15th 2011, 09:56 PM
  3. Newbie Help Requested
    Posted in the Statistics Forum
    Replies: 1
    Last Post: April 13th 2008, 02:22 PM
  4. find the requested trig function value of...
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: October 25th 2007, 07:38 PM

Search Tags


/mathhelpforum @mathhelpforum