Easy -1.2 This is a straightforward application of the R-cos(θ+α) formula where R = √(a²+b²) = √(36+64) = 10. It's a 1-mark multiple-choice question requiring only direct recall of a standard formula with no problem-solving or multi-step reasoning, making it easier than average.
Given that
$$6 \cos \theta + 8 \sin \theta \equiv R \cos (\theta + \alpha)$$
find the value of \(R\).
Circle your answer.
[1 mark]
\(6\) \quad \(8\) \quad \(10\) \quad \(14\)
Given that
$$6 \cos \theta + 8 \sin \theta \equiv R \cos (\theta + \alpha)$$
find the value of $R$.
Circle your answer.
[1 mark]
$6$ \quad $8$ \quad $10$ \quad $14$
\hfill \mbox{\textit{AQA Paper 3 2020 Q2 [1]}}