(2) Let A E R and C be the curve defined by the implicit equation: (arccosy) = r' In(y + 1) + A(x + 1) a) [8 pts] Let (To, yo) be a point of C such that C admits a non-vertical tangent line at (To, yo). Find an equation of this tangent line. b) [4 pts] Find the value of A knowing that the point (0, 0) belongs to C. What is the equation of the normal line to C at the point (0, 0)