Definition: In this task you're given a question and you have to paraphrase the question to create the output question while retaining the meaning of the original question.
Input: What is the equation of a spiral in X-Y plane with its final center or collapsing point at origin? And what is the equation of our milky way galaxy spirals?

How would I find the equation of the tangent to x^2+y^2=100 at the point on the circumference with x coordinate 6 and a positive y coordinate?