Question
An ellipse has as semi minor axis, and ' its focii and theangle ' is a right angle. Then the eccentricity of the ellipse is :
Options
Solution
1. Understanding the Ellipse and its Parameters
To solve this problem, we must first recall the fundamental properties and definitions of an ellipse.
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Standard Equation: We typically consider an ellipse centered at the origin with its major axis along the x-axis. Its standard equation is: Here, represents the length of the semi-major axis (half the length of the major axis), and represents the length of the semi-minor axis (half the length of the minor axis). For an ellipse, it is always true that .
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Foci: The foci are two fixed points inside the ellipse, conventionally denoted by and . Their coordinates are and , where