Parametric equations relate to $144int_{0}^{pi/2}cos(t)sin^2(t)mathrm dt$











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Parametric equations



$x=6cos t$



$y=12sin(2t)$



$0le tle 2pi$



The curve is symmetrical in the x axis and in the y axis.



Show that $$144int_{0}^{pi/2}cos(t)sin^2(t)mathrm dttag1$$



I can't seem to eliminate variables $x$ and $y$ to come to $144cos(t)sin^2(t)$



Integrating $(1)$ is not a problem, I don't need help in that.










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  • 5




    Show what? You haven't mentioned any equality or equation.....
    – Mostafa Ayaz
    Nov 22 at 22:26















up vote
0
down vote

favorite












Parametric equations



$x=6cos t$



$y=12sin(2t)$



$0le tle 2pi$



The curve is symmetrical in the x axis and in the y axis.



Show that $$144int_{0}^{pi/2}cos(t)sin^2(t)mathrm dttag1$$



I can't seem to eliminate variables $x$ and $y$ to come to $144cos(t)sin^2(t)$



Integrating $(1)$ is not a problem, I don't need help in that.










share|cite|improve this question


















  • 5




    Show what? You haven't mentioned any equality or equation.....
    – Mostafa Ayaz
    Nov 22 at 22:26













up vote
0
down vote

favorite









up vote
0
down vote

favorite











Parametric equations



$x=6cos t$



$y=12sin(2t)$



$0le tle 2pi$



The curve is symmetrical in the x axis and in the y axis.



Show that $$144int_{0}^{pi/2}cos(t)sin^2(t)mathrm dttag1$$



I can't seem to eliminate variables $x$ and $y$ to come to $144cos(t)sin^2(t)$



Integrating $(1)$ is not a problem, I don't need help in that.










share|cite|improve this question













Parametric equations



$x=6cos t$



$y=12sin(2t)$



$0le tle 2pi$



The curve is symmetrical in the x axis and in the y axis.



Show that $$144int_{0}^{pi/2}cos(t)sin^2(t)mathrm dttag1$$



I can't seem to eliminate variables $x$ and $y$ to come to $144cos(t)sin^2(t)$



Integrating $(1)$ is not a problem, I don't need help in that.







integration parametric






share|cite|improve this question













share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Nov 22 at 22:12









time

6




6








  • 5




    Show what? You haven't mentioned any equality or equation.....
    – Mostafa Ayaz
    Nov 22 at 22:26














  • 5




    Show what? You haven't mentioned any equality or equation.....
    – Mostafa Ayaz
    Nov 22 at 22:26








5




5




Show what? You haven't mentioned any equality or equation.....
– Mostafa Ayaz
Nov 22 at 22:26




Show what? You haven't mentioned any equality or equation.....
– Mostafa Ayaz
Nov 22 at 22:26















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