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12. (a) Sketch the graphs of r= 1+ cos 6 and r=1 - cost on the same coordinate system by filling in the tables, plotting thos

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12 (O) = rs 1+coso о = |-(ogo п: T16 니 Те тр. 3ТІ. (2-472- (2475]. 32. TIG T4 О (2-3) / (2-N2) [. 1 / те (2-V5-) /.. 15 ), 372. III 2 --2 + 1 r=1 + cos e 0 <O< 20 2 r=1 - cos(0) <O< 211 0r=1tcoso (b) The area of the region that is inside but outside of r=1-coso is 1/2 24 rdo do 17 coso Area & T/2 [ 22 Itioso do

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