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C4 parametric equations help

Stuck on 5ai ignore the note on the side lol
Reply 1
Original post by Mitul106
Stuck on 5ai ignore the note on the side lol


Look at your d(theta)/dx, there is something wrong with it.


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Reply 2
Original post by Mitul106
Stuck on 5ai ignore the note on the side lol


dy/dx becomes -3cos2x/sinx
remember that cos2x=cos^2(x)-sin^2(x)
sub that in and theres your answer.
when you did inverse of dx/dθ it should have been
-1/(2*sinθ) not (-1/2)*sinθ

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