Question: what is the formula to find the eccentricity of an ellipse?
Answer: The eccentricity of an ellipse (x - h)2 / a2 + (y - k)2 / b2 = 1 will always be between 0 and 1 and can be calculated using the following formulas: When a > b, we use e = √(a2 - b2) / a. When b > a, we use e = √(b2 - a2) / b.