Find ∠ BAC and ∠ ACB in the following diagram B C D
if ∠ ABC = 600
and ∠ ACD = 1100
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Find ∠ BAC and ∠ ACB in the following diagram B C D
if ∠ ABC = 600
and ∠ ACD = 1100
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Answer:
An exterior angle of a triangle is equal to the sum of the opposite interior angles.
Hence, In this case ∠A and ∠B
So,
∠A+∠B=140∘ as ∠A=∠B or,2∠A=140∘ =∠A=∠B=70∘