Additional Mathematics 0606 / Trigonometry / 1.321.32: Cosine graph sketch, amplitude and period0606/13/O/N/19 — Question 2 · 6 marksMark as done · Save for later · Show all solutions(i)On the axes below, sketch the graph of y=5cos4x−3y = 5\cos 4x - 3y=5cos4x−3 for −90∘≤x≤90∘-90^{\circ} \le x \le 90^{\circ}−90∘≤x≤90∘.[4]▸ Answer(ii)Write down the amplitude of yyy.[1]▸ Answer(iii)Write down the period of yyy.[1]▸ Answer▸ Official mark scheme← 1.20: Cosine graph sketch, amplitude and period2.10: Cosine graph constants from sketch →
