Easy -1.2 This question requires only direct application of the angle addition formula sin(A+B) and knowledge that sin(180°+x) = -sin(x). It's a straightforward two-part calculation with no problem-solving or insight required, making it easier than average for A-level.
10 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 \(\sin \theta ^ { \circ }\).
10 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 2011 Q10 [2]}}