Consider the following planes. -5x + y + z = 5 15x - 3y + 5z = 25 (a) Find the angle between the two planes. (Round your answer to two decimal places.) 150.80 (b) Find a set of parametric equations for the line of intersection of the planes. (Use t for the parameter. Enter your answers as a comma-separated list of equations.) x = 8t, y = 40t, z = 5

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