x=acos^3t y=bsin^3t eliminate t
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You have to prove that (x/a)^2/3 + (y/b)^2/3 =1
in order to eliminate t
Putting the above values of y and x into (x/a)^2/3 + (y/b)^2/3
= (acos³/a)^2/3 + (bsin³/b)^2/3
=cos²θ + sin²θ
But, cos²θ + sin²θ = 1
in order to eliminate t
Putting the above values of y and x into (x/a)^2/3 + (y/b)^2/3
= (acos³/a)^2/3 + (bsin³/b)^2/3
=cos²θ + sin²θ
But, cos²θ + sin²θ = 1
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