question_answer

Look at the following figure if \[b=70{}^\circ \], \[c=110{}^\circ \]\[d=70{}^\circ \]then find the value of a.

A) \[125{}^\circ \]            

B) \[135{}^\circ \]         

C) \[155{}^\circ \]                        

D) \[110{}^\circ \]

E) None of these