Q. 55.0( 4 Votes )
In the given figu A. 45°
B. 60°
C. 75°
D. 56°
Answer :
Sum of angles in a straight line is 180°
So, ∠AOD + ∠DOC + ∠BOC = 180°
3x + 5x + 4x = 180
12x = 180
x = 15
∠BOC = 4x = 4×15 = 60°.
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