(1 point) Find a Cartesian equation relating x and y corresponding to the parametric equations x = 5 sin(5t) y = 9 cos(5t) Write your answer in the form P(x, y) = 0 where P(x, y) is a polynomial in x and y such that the coefficient of y is 25. Answer: = 0 Find the equation of the tangent line to the curve at the point corresponding to t = 7/15. Answer: y =