Question

8. Find the values of the angles a, b and ci in the following figure​

Answer 1

Answer:

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Answer 2

Answer:

Step-by-step explanation:

In triangle ADC,

⇒ b=60  

o

+70  

o

 

⇒ b = 130  

o

 

Now, in triangle ABD,

⇒ a+b+30  

o

 = 180  

o

 

⇒ a = 180  

o

−30  

o

 - 130  

o

 

⇒ a = 20  

o

 

Also,  

∠ADC=∠BAD+∠ABD  .... Exterior angle property

⇒ c=30  

o

+a

⇒ c=30  

o

+20  

o

 

⇒ c=50  

o

 

Therefore,

a=20  

o

, b=130  

0

, c=50  

o