Question

Find the value of angles a, b and c in the below figures: please answer me this question ​

Answer 1

Answer:

Solution

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