Instruction: Show all of your work and box your answers. 1) i) Find an equation of the tangent to the curve at the given point. I = Cos(30) + sin(20), y = sin(30) + cos(20); 0 = 0 ii) For which values of t is the tangent to curve horizontal or vertical? De- termine the concavity of the curve. x = t² - t -t- 1, y = 2t - 6t - 1 I =

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