Recent content by ilikeicetea

  1. I

    Integration of 1/2 sin y dy from 0 to pi/2: Solution

    k, i got it, i put cos (pi/2) in my calculator but came out to be .9996, so that's why i didn't get the right answer. edit. just know why, cause i have the mode under deg so that's why my answer is all mess up. thanks everybody
  2. I

    Integration of 1/2 sin y dy from 0 to pi/2: Solution

    but i though the integration of sin y is -cos y?
  3. I

    Integration of 1/2 sin y dy from 0 to pi/2: Solution

    i forgot to add this, I am trying to find out why the answer is 1/2 and not 0.
  4. I

    Integration of 1/2 sin y dy from 0 to pi/2: Solution

    Homework Statement what is the integration of 1/2 sin y dy from 0 to pie/2 Homework Equations i know sin y = -cos y (integration) The Attempt at a Solution from 1/2 sin y dy to (1/2) -cos y then i plot pie/2 and 0 i got (1/2) [-cos (pie/2) - (-cos 0)] = 0, but the answer is 1/2...