Consider the following parametric curve. Answer parts a and b. 70 x=2 sint, y = 2 cost; t=2 a. Determine dy dx in terms of t and evaluate it at the given value of t. dx Select the correct choice below and, if necessary, fill in the answer box within your choice. OA. The value of B. The value of A. dy dy dx KN at t= - = is I at t=2 www. is undefined. (Simplify your answer.) b. Make a sketch of the curve showing the tangent line at the point corresponding to the given value of t. In each graph below, the blue dotted line is the tangent line and the red line is the curve. Choose the correct graph belov OB. 1 OC. O D.

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