Question

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​

Answer 1

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.

Answer 2

Answer:

gshhhhxhjfdvhdhddydydydddhhdhdhgwegsgsgsgsgzgxgxxfkgigi766562ye

Step-by-step explanation:

rhhdjdjdjdjdjjdvbdbdbdhjdjxhxdmxmcvnd67