Foundation November 2022 Paper 1 Q27
27 Use trigonometry to work out the value of \(x\).
Not drawn accurately
[3 marks]
| Answer | Mark | Comments |
|---|---|---|
| cos identified or sin 30 identified | M1 | oe |
| \((\cos 60 =)\ \dfrac{1}{2}\) or \((\sin 30 =)\ \dfrac{1}{2}\) | M1 | oe may be seen in a table |
| 4 | A1 |
Additional guidance
| Check diagram for working 4 written next to the \(x\) on the diagram is full marks unless contradicted | |
| Cos can be identified by, for example, CAH circled in SOHCAHTOA | |
| \(8 \cos 60\) \(8 \times \dfrac{1}{2}\) | M1M0 M1M1 |
| Answer 4 from creating an equilateral triangle | M1M1A1 |
| Answer only 4 | M1M1A1 |
| Answer 4 from drawing a scale or full-sized diagram of the right-angled triangle | M0A0 |