4400 Higher November 2008 Paper 4 Q7
7
Diagram NOT accurately drawn
Work out the value of \(h\).
Give your answer correct to 3 significant figures.
(3)
| Scheme | Marks |
|---|---|
| \(4^2 + 6^2\) (= 52) | M1 |
| \(\sqrt{\text{“}52\text{”}}\) or \(2\sqrt{13}\) | M1 |
| 7.21... | A1 |
| (3) | |
| (3 marks) |
Notes
M1: \(\sin(\tan^{-1}(\frac{4}{6})) = \frac{4}{h}\)
M1: dep
\(h = 4/\sin(\tan^{-1}(\frac{4}{6}))\)