∠ABE=∠ADE ...Angles inscribed in the same arc are congruent∴z=70om∠BAD=∠BED ...Angles inscribed in the same arc are congruent
∴x=y ...(1)
Now, z is the exterior angle to ΔBEC
Hence, z=∠BEC+∠BCE
⇒70=y+30
⇒y=40o ....(2)
Hence, x=40o ....From (1) and (2)
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