Tolongggg donkk bsk di kumpullpakai caranya…..

Sudut BEC = 180-105=75
sudut ABC = 180 – 68 – 75 = 180 – 143 = 37
sudut ADC = sudut ABC = 37 ( karena menghadap busur yg sama)

Sudut BEC

= 180 – 105

= 75

sudut ABC

= 180 – 68 – 75

= 180 – 143

= 37

Jawabannya C