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In Fig XY and X'Y' are two parallel tan...

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^@`

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The correct Answer is:
`90^@`
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EDUCART PUBLICATION-CIRCLES-SHORT ANSWER (SA-II) Type Questions
  1. In Fig XY and X'Y' are two parallel tangents to a circle with centre ...

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  8. A chord PQ of a circle is parallel to the tangent drawn at a point R ...

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  9. Prove that a diameter AB of a circle bisects all those chords which ar...

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  10. AB is a diameter of a circle with centre O and AT is a tangent. If ang...

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  11. In the given figure, O is the centre of a circle, BOA is its diameter ...

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  12. Prove that the length of the tangents drawn from an external point to ...

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  13. In Fig, PQ is a tangent from an external point P to a circle with cent...

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  14. In Fig , are two concentric circles of radii 6 cm and 4 cm with centre...

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  15. From an external point P, two tangents PT and PS are drawn to a circle...

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  16. Two tangents PA and PB are drawn to a circle with centre O from an ext...

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  17. Prove that the tangent at any point of circle is perpendicular to the ...

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  18. Prove that tangent drawn at the mid point of the are of a circle is pa...

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