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Find angle DCA.

 

 Jul 15, 2020
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1)  Since Z is the center of the circle, arc(BC) = angle(BZC)   --->   arc(BC) = .......o

 

2)  Since angle(BAC) cuts off arc(BC), angle(BAC) = ½·arc(BC)   --->   angle(BAC) = .......o 

 

3)  Since AB || CD, angle(DCA) = angle(BAC)   --->   angle(DCA) = .......o

 Jul 15, 2020

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