Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Where cos(x) intersects sin(x)

  1. Nov 26, 2008 #1
    we know that cos(x) intersects sin(x) in the interval 0< x< pi/2... but how can i find (x,y) points of this intersection? (without plotting and estimating based of the resultant graph)
  2. jcsd
  3. Nov 26, 2008 #2


    User Avatar
    Science Advisor

    If cos(x)= sin(x) then sin(x)/cos(x)= tan(x)= 1. Solve that equation.
  4. Nov 26, 2008 #3


    User Avatar
    Homework Helper
    Gold Member

    In a right angled triangle with hypotenuse of length 1 and one angle x, the side next that angle is cos x, the side opposite ... need I say more?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook