June 2024 Paper 1 Q5
5 Solve the equation
\[\sin^2 x = 1\]for \(0^\circ \lt x \lt 360^\circ\) [3 marks]
| Scheme | Marks | AO |
|---|---|---|
| Obtains \(\sin x = \pm 1\) Or Obtains \(\cos x = 0\) PI by a correct value for \(x\) Condone radians and values outside of range | M1 | 1.1a |
| Obtains 90 or 270 Or Obtains both \(\dfrac{\pi}{2}\) and \(\dfrac{3\pi}{2}\) | A1 | 1.1b |
| Obtains 90 and 270 and no other values in the range. | A1 | 1.1b |
| (3 marks) |