At one end A of a diameter AB of a circle of radius 5 cm, tangent XAY is drawn to the circle. The length of the chord CD parallel to XY and at a distance 8 cm from A is :
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A chord CD is drawn which is parallel to XY and at a distance of 8cm from A. As we know that tangent at any point of a circle is perpendicular to the radius through the point of contact. As sum of cointerior angle is 180°. AE=8cm
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