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4) The radius of a circle is
15cm. The distance of
centre O from M; the
B
midpoint of chord AB is
M

By Aubrey

4) The radius of a circle is
15cm. The distance of
centre O from M; the
B
midpoint of chord AB is
M
9 cm. Find the length of
A
chord AB​

About the author
Aubrey

difference between the atoms and molecules
.
.
Short answers
for class 9
​

verify the associative property of addition for the given rational numbers and write their sum in each of the following.
1) a

2 thoughts on “4) The radius of a circle is<br />15cm. The distance of<br />centre O from M; the<br />B<br />midpoint of chord AB is<br />M<br />”

  1. Answer:

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    Step-by-step explanation:

    rhhdjdjdjdjdjjdvbdbdbdhjdjxhxdmxmcvnd67

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  2. Step-by-step explanation:

    is ke jesa he ye kar lena

    The radius of a circle is given as 15 cm and chord AB subtends an angle of 131

    ∘

    at the centre C of the circle.Using trigonometry ,calculate :

    (i) the length of AB ;

    (ii) the distance of AB from the centre C

    1111888

    Answer

    Open in answr app

    Given r=15

    ∠AOB=13.1

    AB=x

    AC=CB=

    2

    x

    ∠AOC=65.5

    o

    sin65.5=

    2×15

    x

    As sin65.5=0.909

    x=0.909×30=27.27

    ∴ length of AB=27.27

    OC=cos65−5×15

    =0.414×15

    OC=6.21cm

    ∴ length of chord AB=27.27cm

    distance between centre and the chord is 6.21 cm.

    Reply

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