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If O is the centre of a circle with radi...

If O is the centre of a circle with radius r and AB is a chord of the circle at a distance `r/2` from O, then `/_BAO=`

Text Solution

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The correct Answer is:
`30^@`
NA
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Knowledge Check

  • In the given figure, O is the centre of a circle of radius 13 cm and AB is a chord perpendicular to OD. If CD = 8 cm, then what is the length (in cm) of AB?

    A
    A)6 cm
    B
    B)12 cm
    C
    C)24 cm
    D
    D)28cm

  • In the adjoining figure O is the centre of the circle with radius r’ AB, CD and EF are the diameters of the circle. ‘ angleOAF = angle‘OCB = 60^(@) . What is the area of the shaded region?

    A
    `(r^(2))/(2)(pi-(3sqrt(3))/(2))`
    B
    `(r^(2))/(2)(pi-(3sqrt(3))/(4))`
    C
    `(r^(2))/(3)(pi-(2sqrt(3))/(3))`
    D
    Data insuffincient

  • O is the centre of a circle. AB is a chord of the circle but not its diameter. OC is perpendicular to AB. If OC = CB and radius of the circle be 7 cm, then the length of AB is

    A
    `7 sqrt(2) cm`
    B
    `14 cm`
    C
    7 cm
    D
    `(7)/( sqrt(2))` cm

    • Similar Questions

    Explore conceptually related problems

    In the adjoining figure O is the centre of the circle with radius 'r' AB, CD and EF are the diameters of the circle. angleOAF = angleOCB = 60^(@) . What is the area of the shaded region?

    In given figure, O is the centre of the circle. A chord, which is not the diameter of the circle is

    In the adjoining figure, O is the centre of the circle. If the chord AB is equal to the radius of the circle, then find the value of angleADB .

    AB is the diameter of a circle whose centre is O. DC is a chord of that circle. If DC||AB and angleBAC=20^(@) then angleADC =?

    O and O' are the centres of circle of radii 20 cm and 30 cm AB = 24 cm . What is the distance O O' ?

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