The arc length of one petal of the rose r = sin 30 is given by 1 73 2 S 2/³ TT 1 ·풍 2 S sin2 0+9 cos² 0 de 6 2 [² sin2 30+8 cos² 30 de 1+8 cos² 30 de sin² 0+9 cos² 0 de

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