oment joining the points Ala. 4. If fig., XY XY and XY are two parallel tangents to act ning the points Ala.b) and point of contact C intersecting XY at A and XY at B. is to a circle with centre and at A and XY at B. Prove that ZAOB PA X

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 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 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^@ .

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.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 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^@ .

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^(@) .

Choose the correct answer and give justification for each. In the figure XY and X^(1)Y^(1) 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^(1)Y^(1) at B then /_AOB=