In figure 10.13, XY and X'Y'.0 are There are two parallel tangent lines on the circle and the tangent point But tangent AB, XY to A and XY to B. Intersects. Prove that ZAOB = 90 °.

In Fig, 10.13, XY and X'Y' are two parallel tangents to a circle with centre O and another tangent AR with point of contact C intersecting XY at A and X'Y' at B. Prove that angle AOB=90^@ .

XY and X'Y' are two parallel tangents to the circle with centre at O. Antoher tangent AB touches the circle at C and XY at A and X'Y' at B. Prove that angleAOB=90^(@) .

In Fig.10.13, XYandX'Y' are two parallel tangent to a circle with centre O and another tangent AB with point of contact C intersecting XY at A and X'Y' at B.Prove that angleAOB=90^@ .

In the given figure ,XY and XY are two parallel tangents to a circle with centre O and another tangent AB with point of contact C intersecting XY at A and X'Y' ar B.Prove that angleAOB=90^(@)

In Fig XY and X'Y' are two parallel tangents to a circle with centre O and another tangent AB with point of contact C intersecting XY and X'Y' at B , prove that angle AOB = 90^@

In the figure XY and X'Y' are two parallel tangents to a circle with centre O and another tangent AB with point of cantact C intersecting XY at A and X'Y' at B then angle AOB=

In the given figure 4.13 ,xy and x'y' are two parallel tangents to a circle with centre O and another tangent AB with point of contact C intersecting xy at A and x'y' at B. Prove that angle AOB =90^@ .

In the given figure PQ & RS are two parallel tangents to a circle o and another tangent AB with point of contact C intersecting PQ at A and RS at B. Prove that angleAOB = 90^@