Question : In figure (1) and (I), Find the values of a, b and c. I 30/60 70° a B b/c D (i) 55° 60° 40° R S (ü). I can't post figure it's a triangle with the degRees I have given
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Answer:
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
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