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Question
In the given figure, if ∠CAD=150∘ and ∠ABC=60∘, then reflex ∠ACB=___ .
In the given figure, if ∠CAD=150∘ and ∠ABC=60∘, then reflex ∠ACB=
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Solution
The correct option is D 3 right angles
∠ACB + ∠ABC=∠DAC [Exterior angle property]
∠ACB+60∘=150∘∠ACB=90∘∴ Reflex ∠ACB=360∘−90∘=270∘=3×90∘=3 right angles
The correct option is D 3 right angles
∠ACB + ∠ABC=∠DAC [Exterior angle property]
∠ACB+60∘=150∘∠ACB=90∘∴ Reflex ∠ACB=360∘−90∘=270∘=3×90∘=3 right angles
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