Question

IN THE GIVE FIG O IS THE CENTRE OF THE CIRCLE AND ANGLE D IS 50 DEGREE FIND ANGLE ABC ​

Answer 1

Answer:

Step-by-step explanation:

Given,

O is the centre of the circle  and ∠OBC=50  

o

 

Now,

We know that the angle at the centre is twice the angle at the  

circumference subtended by the same arc.

Therefore,

∠AOC=2∠ABC

                     =2×50  

o

 

                     =100  

o

 

∠ADC is the angle at circumference.∠AOC(exterior angle) is the angle at circle.

exterior ∠AOC=360  

o

−100  

o

 

                                 =260  

o

 

Therefore,

2∠ADC=exterior∠AOC

=>∠ADC=  

2

260

​  

 

                      =130  

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Answer 2

Answer:

the given fig o is the centre of the circle and angled d is 50 degree. angle and is 180-50=130