A) \[{{100}^{{}^\circ }}\]
B) \[{{80}^{{}^\circ }}\]
C) \[{{90}^{{}^\circ }}\]
D) \[{{88}^{{}^\circ }}\]
Correct Answer: C
Solution :
(c): \[\angle ABO={{128}^{{}^\circ }}\] \[\therefore \]\[MBO={{180}^{{}^\circ }}-{{128}^{{}^\circ }}={{52}^{{}^\circ }}\] \[\therefore \]\[\angle MOD={{142}^{{}^\circ }}-{{52}^{{}^\circ }}={{90}^{{}^\circ }}\] \[\therefore \]\[\angle ODC={{180}^{{}^\circ }}-{{90}^{{}^\circ }}={{90}^{{}^\circ }}\]You need to login to perform this action.
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