A) \[{{140}^{{}^\circ }}\]
B) \[{{150}^{{}^\circ }}\]
C) \[{{105}^{{}^\circ }}\]
D) \[{{120}^{{}^\circ }}\]
Correct Answer: C
Solution :
(c): \[\angle ABC={{180}^{{}^\circ }}-\left( {{35}^{{}^\circ }}+{{70}^{{}^\circ }} \right)\] \[\angle ABC={{75}^{{}^\circ }}\] And \[\angle DCF-\angle ABC={{75}^{{}^\circ }}\] \[\therefore \]\[\angle EDC={{180}^{{}^\circ }}-\angle DCF={{105}^{{}^\circ }}\]You need to login to perform this action.
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