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Hello sir/ maam May I know the difference between focal chord and focal radius

Hello sir/ maam 
 May I know the difference between focal chord and focal radius

Grade:12

1 Answers

Waseem khan
33 Points
5 years ago
The chord of the parabola which passes through the focus is called the focal chord.Wheareas the focal radius is also knows as focal length The distance between the vertex and the focus, measured along the axis of symmetry, is the "focal length".

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