4MA0 Higher June 2013 Paper 3R Q11
11
Diagram NOT accurately drawn
Calculate the value of \(x\).
Give your answer correct to 3 significant figures.
(3)
| Scheme | Marks |
|---|---|
| identify sin 52 or cos 38 | M1 |
| \(\sin 52 = \dfrac{6.8}{x}\) or \((x =)\dfrac{6.8}{\sin 52}\) or \(\dfrac{x}{\sin 90} = \dfrac{6.8}{\sin 52}\) | M1 |
| 8.63 | A1 |
| (3) |
Notes
M1: for use of sin 52 or use of cos 38
M1: or \(\cos 38 = \dfrac{6.8}{x}\) or \((x =)\dfrac{6.8}{\cos 38}\)
A1: (8.62932..) awrt 8.63