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Homework Help: 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


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


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    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?
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