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Choose the correct answer and give justi...

Choose the correct answer and give justification for each .
The angles between a tangent to a circle and the radius draw at the point of contact is

A

`60^@`

B

`70^@`

C

`90^@`

D

`20^@`

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BEYOND PUBLICATION-TANGENTS AND SECANTS TO CIRCLE-EXERCISE
  1. Parallelogram circumscribing a circle is a ………………..

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  2. In the figure XY and X'Y' are two parallel tangents to a circle with ...

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  3. Choose the correct answer and give justification for each . The ang...

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  4. If AP and AQ are the two tangents of a circle with centre 'O'. So that...

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  5. Area of circle interms of diameter is ………..

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  6. In the figure AP , = 12 cm , PB = 16 cm and pi=3 then perimeter of sh...

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  7. A bicycle wheel makes 75 revolutions per minute to maintain a speed of...

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  8. Angle described by hour hand in 12 hoours is ……..

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  9. Each angle in a square is ……

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  10. In the figure, the area of shaded region is……………..cm^2.

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  11. Perimeter of semicircle is …………….. Units .

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  12. In the figure the relation among a, b and c is…………

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  13. In the figure, a =……………….

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  14. Perimeter of sectors = ……………….

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  15. The radius of a circle is doubled then its area becomes ……………….. Time...

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  16. If two concentric circles, a chord of length 40 cm of larger circle be...

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  17. A chord of circle of radius 10 cm subtends a right angle at the centre...

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  18. Find the area of the shaded region in figure , where ABCD is a square ...

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  19. Calculate the area of the desigred region in figure , common between t...

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  20. If two tangents inclined at an angle of 60^(@) are drawn to a circle o...

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