1MA0 Higher November 2016 Paper 2 Q3
3
Diagram NOT accurately drawn
In the diagram, all angles are in degrees.
Angle \(AOB\) is a right angle.
Angle \(AOC\) = Angle \(BOC\).
Work out the value of \(x\). (3)
| Answer | Mark | Notes |
|---|---|---|
| 26 | 3 | M1 for \((360 - 90) \div 2\) (= 135) M1 for \(4x + 31 = \text{``}135\text{''}\) or \(6x - 21 = \text{``}135\text{''}\) A1 cao OR M1 for forming an appropriate equation eg \(4x + 31 = 6x - 21\) or \(6x - 21 + 4x + 31 + 90 = 360\) oe M1 (dep) for isolating terms in \(x\) and number terms A1 cao |