Home
Class 9
MATHS
In the figure, O is the centre of the ci...

In the figure, O is the centre of the circle and `angleACB=40^(@)` then `angleAOB` = . . . . . . . . . .

A

`80^(@)`

B

`85^(@)`

C

`70^(@)`

D

`65^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • GEOMETRY

    FULL MARKS|Exercise Prograss check (Answer the following question|7 Videos

  • GEOMETRY

    FULL MARKS|Exercise Prograss check|13 Videos

  • GEOMETRY

    FULL MARKS|Exercise Exercise 4.6|7 Videos

  • COORDINATE GEOMETRY

    FULL MARKS|Exercise TEXTBOOK ACTIVITY|2 Videos

  • MENSURATION

    FULL MARKS|Exercise Assignment (II. Answer the following questions)|8 Videos

Similar Questions

Explore conceptually related problems

O is the centre of a circle, angleAOB=100^(@) . Then angle angleACB = . . . . . . . . .

O is the centre of the circle. The value of x in the given diagram is . . . . . . . . .

PQ and RS are two equal chords of a circle with centre O such that anglePOQ=70^(@) , then angleORS = . . . . . . . . . .

In the adjoining figure, O is the centre of the circle . Find the value of angleABP if anglePOB = 90^(@)

In the adjoining figure, point P is the centre of the circle and line AB is the tangent to the circle at T . The radius of the circle is 6 cm . Find PB if angleTPB=60^(@)

In the figure, O is the centre of a circle and diameter AB bisects the chord CD at a point E such that CE = ED = 8 cm and EB = 4 cm. The radius of the circle is . . . . .

FULL MARKS-GEOMETRY-Exercise 4.7 (I. Multiple Choice Questions)
  1. The exterior angle of a triangle is equal to the sum of two

    Text Solution

    |

  2. In the quadrilateral ABCD, AB=BC and AD=DC Measure of angleBCD is . . ...

    Text Solution

    |

  3. ABCD is a square, diagonals AC and BD meet at O. The number of pairs o...

    Text Solution

    |

  4. In the given figure CE || DB then value of x^(@) is . . . . . . . . .

    Text Solution

    |

  5. The correct statement out of the following is . . . . . . . . .

    Text Solution

    |

  6. If the diagonal of a rhombus are equal, then the rhombus is a

    Text Solution

    |

  7. If bisectors of angleA and angleB of a quadrilateral ABCD meet at O, t...

    Text Solution

    |

  8. The interior angle made by the side in a parallelogram is 90^(@) then ...

    Text Solution

    |

  9. Which of the following statement is correct?

    Text Solution

    |

  10. The angles of the triangles are 3x-40, x+20 and 2x-10 then the value o...

    Text Solution

    |

  11. PQ and RS are two equal chords of a circle with centre O such that ang...

    Text Solution

    |

  12. A chord is at distance of 15 cm from the centre of the circle of radiu...

    Text Solution

    |

  13. In the figure, O is the centre of the circle and angleACB=40^(@) then ...

    Text Solution

    |

  14. In a cyclic quadrilaterals ABCD, angleA=4x,angleC=2x the value of x is...

    Text Solution

    |

  15. In the figure, O is the centre of a circle and diameter AB bisects the...

    Text Solution

    |

  16. In the figure, PQRS and PTVS are two cyclic quadrilaterals, If angleQR...

    Text Solution

    |

  17. If one angle of a cyclic quadrilateral is 75^(@), then the opposite an...

    Text Solution

    |

  18. In the figure, ABCD is a cyclic quadrilateral in which DC produced to ...

    Text Solution

    |

  19. AD is a diameter of a circle and AB is a chord. If AD= 30 cm and AB = ...

    Text Solution

    |

  20. In the given figure, If OP= 17 cm PQ= 30 cm and OS is perpendicular to...

    Text Solution

    |