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Two tangents PA and PB are drawn to circ...

Two tangents PA and PB are drawn to circle with centre O from an external point P. Prove that `angleAPB= 2angleOAB`

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KALYANI PUBLICATION-CIRCLES-EXERCISE
  1. Two tangents PA and PB are drawn to circle with centre O from an exter...

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  2. XP and XQ are tangents to a circle with centre O. ARB is another tange...

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  3. PA and PB are tangents to the circle with centre O such that /APB = 60...

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  4. In a circle of radius 4 cm a chord AB of length 4 cm is drawn. PA and ...

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  5. The length of a tangent drawn to a circle from a point which is a dist...

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  6. PA and PB are tangents to the circle with center O such that /APB=50°,...

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  7. From an external point T, tangents PT is drawn to the circle whose cen...

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  8. AB is a diameter of a circle with centre O and AT is a tangent. If /AO...

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  9. In figure, PQ is a tangent at a point R of the circle with centre O. I...

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  10. Two tangents PA and PB are drawn to circle with centre O from an exter...

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  11. Prove that opposite sides of a quadrilateral circumscribing a circle s...

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  12. ABC is a right angled triangle right angled at A. A circle is inscribe...

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  13. Prove that tangents from extremities of any chord makes equal angle wi...

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  14. PA and PB are two tangents drawn from an external point P at the point...

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  15. ABCD is a quadrilateral such thatangleD=90^@.The circle C(0,r) touches...

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  16. Prove that parallelogram circumscribing a circle is a rhombus.

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  17. From a point P, two tangents PA and PB are drawn to a circle C(0,r). I...

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  18. Prove that the length of tangents drawn from an external point to a ci...

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  19. Prove that the centre of a circle touching two intersecting lines lies...

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  20. In figure two equal circles touch each other at T if QP =4.5 cm then Q...

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  21. Draw a circle with centre O and radius 4 cm. Take a point P outside th...

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