Moderate -0.8 This is a straightforward question requiring a standard sine curve sketch and solving a basic trigonometric equation using calculator and symmetry. Both parts are routine C2 skills with no problem-solving insight needed, making it easier than average.
Sketch the curve \(y = \sin x\) for \(0° \leqslant x \leqslant 360°\).
Solve the equation \(\sin x = -0.68\) for \(0° \leqslant x \leqslant 360°\). [4]
Question 7:
7 | At least one cycle from (0, 0)
amplitude 1 and period 360[°]
indicated
222.8 to 223 and 317 to 317.2 [°] | G1
G1dep
2 | 1 each, ignore extras | 4
Sketch the curve $y = \sin x$ for $0° \leqslant x \leqslant 360°$.
Solve the equation $\sin x = -0.68$ for $0° \leqslant x \leqslant 360°$. [4]
\hfill \mbox{\textit{OCR MEI C2 Q7 [4]}}