Moderate -0.8 This question requires only direct application of the angle addition formula sin(A + 180°) = -sin(A), which is a standard result. Students need to apply this twice (for n=1 and n=2), making it a straightforward exercise in trigonometric identities with minimal problem-solving required.
4 The \(n\)th term, \(t _ { n }\), of a sequence is given by
$$t _ { n } = \sin ( \theta + 180 n ) ^ { \circ }$$
Express \(t _ { 1 }\) and \(t _ { 2 }\) in terms of \(\sin \theta ^ { \circ }\).
4 The $n$th term, $t _ { n }$, of a sequence is given by
$$t _ { n } = \sin ( \theta + 180 n ) ^ { \circ }$$
Express $t _ { 1 }$ and $t _ { 2 }$ in terms of $\sin \theta ^ { \circ }$.
\hfill \mbox{\textit{OCR MEI C2 Q4 [2]}}