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sketch the polar wquation curve r=cos(2theta) a) how do sketch the curve. what do i need...

sketch the polar wquation curve r=cos(2theta)

a) how do sketch the curve.

what do i need to know to sketch the curve (like do i plug variables into an equation to get points)?
-please show

b) how do i find the area of one petal?
Math   Calculus   
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