What is the value of $a - b$

180^{0}

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60^{0}

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70^{0}

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120^{0}

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Solution

The correct option is C $60^{0}$
From figure, we can say
$∠ a = 120^{0}$
and $∠ b = 60^{0}$ ....Vertically opposite angles
Thus $a - b = 120 - 60 = 60^{0}$

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What is the value of a−b

The correct option is C 600From figure, we can say∠a=1200 and ∠b=600 ....Vertically opposite anglesThus a−b=120−60=600

What is the value of $a - b$

The correct option is C $60^{0}$
From figure, we can say
$∠ a = 120^{0}$
and $∠ b = 60^{0}$ ....Vertically opposite angles
Thus $a - b = 120 - 60 = 60^{0}$