Options are
a) 70° b) 80° c) 60°
Need answer with method
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❇️ Solution
As its a straight line so angle AOC & BOC makes a linear pair.
It means,
2x + 30 + 2x + 10 = 180
4x + 40= 180
4x = 180 - 40
4x = 140
x = 35°
.°. angle BOC = 2 × 35 + 10
= 70+ 10
= 80°
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Answered by
0
Answer:
The measurement of a straight line is 180°
(2x+30°) + (2x+10°) = 180°
2x+30°+2x+10° = 180°
4x+40° = 180°
4x = 180°- 40°
4x = 140°
x = 140°/4
x = 35°
m(angle BOC)
= 2x + 10°
= 2×35°+10°
= 70°+10°
= 80°
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