Higher November 2023 Unit 2 Q4
4.
Diagram not drawn to scale
Calculate the length of the side \(AC\). [3]
| Scheme | Marks | Comments |
|---|---|---|
| (AC2 = ) 82 + 4·52 or equivalent | M1 | Check diagram. note: (AC2 =) 64 + 20·25. |
| (AC =) \(\sqrt{8^2 + 4.5^2}\) or equivalent | m1 | note: (AC =) √84·25. FT √’their 84·25’ for m1 only provided M1 gained. |
| 9·1(7878…) (cm) ISW | A1 | Accept the answer rounded or truncated to at least one decimal place. Final answer of
|
4. Alternative method to find AC using Trig
| Scheme | Marks | Comments |
|---|---|---|
| A correct and complete method (using trigonometric relationships) | M2 | |
| 9·1(7878…) (cm) ISW | A1 | Accept the answer rounded or truncated to at least one decimal place. |