Higher November 2018 Paper 1 Q8

(a) Write down the exact value of \(\tan 45^\circ\) (1)

Here is a right-angled triangle.

\(\cos 60^\circ = 0.5\)

(b) Work out the value of \(x\). (2)

Answer	Mark	Mark scheme
1	B1	cao

Mark scheme (b)

Answer	Mark	Mark scheme
8	M1	starts process, eg \(\cos(60) = \dfrac{4}{x}\) or \(0.5 = \dfrac{4}{x}\) oe or \(\sin 30 = \dfrac{4}{x}\) or \(\dfrac{\sin 30}{4} = \dfrac{\sin 90}{x}\) oe
8	A1	cao

All three elements of cos, 4, \(x\) must be present in an equation. eg \(\cos = 4/x\) is acceptable but \(\cos(4/x)\) is insufficient