0606 P11 - Jun 2020 - Q2 - 4 marks
8098
(a) Write down the period of
\(2\cos\frac{x}{3}-1.\)
(b) Sketch the graph of
\(y=2\cos\frac{x}{3}-1\)
for \(-360^\circ\leq x\leq360^\circ\).
Solutions locked. Please sign in with access to view them.