Additional Mathematics 0606 / Trigonometry / 1.41.4: Amplitude, period and sketch of a sine graph0606/11/M/J/19 — Question 2 · 5 marksMark as done · Save for later · Show all solutions(i)Write down the amplitude of 4sin3x−14\sin 3x - 14sin3x−1.[1]▸ Answer(ii)Write down the period of 4sin3x−14\sin 3x - 14sin3x−1.[1]▸ Answer(iii)On the axes below, sketch the graph of y=4sin3x−1y = 4\sin 3x - 1y=4sin3x−1 for −90∘≤x≤90∘-90^{\circ} \le x \le 90^{\circ}−90∘≤x≤90∘.[3]▸ Answer▸ Official mark scheme← 2.33: Exact tan and hypotenuse with surds1.27: Secant identity and squared sine equation →
