Additional Mathematics 0606 / Trigonometry / 1.231.23: Amplitude and period of a cosine function0606/13/M/J/17 — Question 2 · 2 marksMark as done · Save for later · Show all solutionsGiven that y=3+4cos9xy = 3 + 4\cos 9xy=3+4cos9x, write down(i)the amplitude of yyy,[1]▸ Answer(ii)the period of yyy.[1]▸ Answer▸ Official mark scheme← 1.11: Cosec over cot plus tan identity1.24: Sine graph sketch and modulus range →
