math as level

Hiii can anyone help me solve this question? Show that dy/dx=Tan(theta) When, x=2(theta)+Sin(2(theta)) And y=1+Cos(2(theta))

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i have some of the feb.march 2019 papers if u need for another subject, let me know MATH PAPER 4: https://www.file4.net/f-SyG MATH PAPER 1: https://www.file4.net/f-SyF PHYSICS PAPER 2: https://www.file4.net/f-SFt

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Hi! So, math P1 is on 4th May and I am hell stressed. I really need an A like there is no option here. And I need some motivation and tips to work hard. Except for doing all the past papers that exist. What other measures are you guys taking? Any help is highly appreciated