Find the value of \(x^{\circ}\), giving reasons. (2 marks)
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\(\text{Vertically opposite angles}\ = 87^{\circ} \).
\(x^{\circ} = 180-87=93^{\circ}\ \ \text{(cointerior angles)}\)
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\(\text{Vertically opposite angles}\ = 87^{\circ} \).
\(x^{\circ} = 180-87=93^{\circ}\ \ \text{(cointerior angles)}\)