4MA0 Foundation June 2011 Paper 2 Q21
21
Diagram NOT accurately drawn
Calculate the length of \(LM\).
Give your answer correct to 3 significant figures.
(3)
| Scheme | Marks |
|---|---|
| Use of sin 42 or cos 48 | M1 |
| 9.3 × sin 42 or 9.3 cos 48 | M1 |
| 6.22 | A1 |
| (3) | |
| (Total 3 marks) |
Notes
M1: \(9.3^2 - (9.3 \cos 42)^2\) (=38.72..)
M1: \(\sqrt{\text{“}38.72\text{”}}\) (M1 dep)
A1: awrt 6.22
6.22(2914...)