Expression 1: "r" equals cosine 10 left parenthesis, theta plus StartFraction, pi Over 4 , EndFraction , right parenthesis plus "N" cosine 2 left parenthesis, theta , right parenthesisr=cos10θ+π4+Ncos2θ
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domain \theta Minimum:
less than or equal to theta less than or equal to≤θ≤