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I shall not use angle with the prescribed angle!
DAC=DBC=60°(angle on same segment
ADC=90°(angle on semi circle)
in ∆ADC,,
ADC+DAC+DCA=180°
90+60+DCA=180
DCA=30°
since,AC || DE
EDC=DCA=30°. (co interior)
Ans.=30°
DAC=DBC=60°(angle on same segment
ADC=90°(angle on semi circle)
in ∆ADC,,
ADC+DAC+DCA=180°
90+60+DCA=180
DCA=30°
since,AC || DE
EDC=DCA=30°. (co interior)
Ans.=30°
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