In the figure, /|| m such that ZA= 110° & ZB= 130°then m ZACB is a) 50° b) 60° c) 70° d) 120° B 130° m A 110°
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Answered by
0
Answer:
Correct option is
C
70
∘
In △ADC, we have
∠DAC=60
0
and ∠ABD=50
0
By angle sum property, in △ABD
∠DAB+∠ABD+∠ADB=180
0
=>60
°
+50
°
+∠ADB=180
°
=>∠ADB=180
°
−110
°
=>∠ADB=70
°
We know that the angles subtended at the circumference by the same arc are equal.
∴∠ADB=∠ACB
=>∠ACB=70
0
Answered by
0
↝Correct option is C
70°
↝In △ADC, we have
↝ ∠DAC=60
0
↝ and ∠ABD=50
0
↝By angle sum property, in △ABD
↝ ∠DAB+∠ABD+∠ADB=180
0
↝60°+50° +∠ADB=180°
↝∠ADB=180° −110°
↝∠ADB=70°
We know that the angles subtended at the circumference by the same arc are equal.
∴∠ADB=∠ACB
↝∠ACB=70
0
HOPE SO IT HELPS YOU
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