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I need help with this Calculus problem involving approximations for sine and cosine. Please show work! Thanks!? What is the solutions for these two problems??? Can anyone help me? How many pounds of caviar does one sturgeon produce? I need help with this question on linear approximations. Please show y? What is the sum from n=1 to ∞ of (-1)^(n+1) π^(2n) / (2n+1)!?