129, given 18) Find y'= A) 2y/(2x - sin y) C) - 2x/(2y - cos y) in terms of x and y for an Implicit Equation of y2+ x2 = B) 2x/(2y - cos y) D) - 2y/(2x - sin y) siny + 4 19) Find an equation of the tangent line y = mx + b to an Implicit Equation of y2+ x2 = siny + 4 at the point (2,0). A) y = - 2x + 4 B) y = 2 x- 4 C) y =- 4x + 6 D) y = 4x - 8

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