Steps are given to determine the centre of curvature at a given point on an Ellipse. Arrange the steps. Let P be the given point on the conic and F is one of the focus. i. Join A with C. ii. Then O1 and O2 are the centres of curvature when the point P is at A and C respectively. iii. Draw a rectangle AOCE in which AO = ½ major axis and CO = ½ minor axis. iv. Through E, draw a line perpendicular to AC and cutting the major axis at O1 and the minor axis O2.

Steps are given to determine the centre of curvature at a given point

1.	Steps are given to determine the centre of curvature at a given point on an Ellipse. Arrange the steps. Let P be the given point on the conic and F is one of the focus. i. Join A with C. ii. Then O1 and O2 are the centres of curvature when the point P is at A and C respectively. iii. Draw a rectangle AOCE in which AO = ½ major axis and CO = ½ minor axis. iv. Through E, draw a line perpendicular to AC and cutting the major axis at O1 and the minor axis O2.
A.	i, iv, ii, iii
B.	iv, i, iii, ii
C.	iii, i, iv, ii
D.	ii, iv, i, iii
Answer» D. ii, iv, i, iii

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