Question

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Answer 1

Step-by-step explanation:

∆BEC is right angled triangle

therefore x = 180 - (60+90) = 30°

by linear pair,

exterior angle D = 180-75 = 105°

from ∆ ACD

y = 180 - (105 +60) = 15°

Answer 2

you can get your answer in this picture........