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How do you graph the parametric equations? X=2sin4t Y=4cos4t -pi/(less than or = to) t (less than or = to) pi/4 PLEASE HELP ASAP? If O is the center of the circle and m∠ABC=24°, what is the measure of ∠BDC? How can we prove causation without randomized controlled trials? On day of giving , how much goes to charity? Describe two examples of how an understanding of genetics is making new fields of health care (treatment or diagnosis) possible?