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Question

Question 126

Find the value of x in the given figure.

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Solution

In the given figure, BAC=80,ABC=30,ACE=x and ECD=90
In ΔABC, we know that, exterior angle is equal to the sum of interior opposite angles.
ACD=CAB+ABC
ACE+ECD=80+30 [ACD=ACE+ECD]
ACE+90=110 [ECD=90]
ACE=x=11090=20


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