18 = 162.48 72.1 5 M1 for or cos–1 A1 for 162.4(8) M1 for cos = y OR M1 for cos–1 A1 for 72.0 72.1 – = 141.42 OR 141.42÷2=70.71 M1 for or 141.4(2) or or = 154.59 A1 for 154.5(9) tan–1 M1 for tan = y M1 for tan–1 A1 for 72.0 72.1 –
18 = 162.48 cos–1 OR = 141.42 141.42÷2=70.71 = 154.59 tan–1 72.1 5 M1 for or A1 for 162.4(8) M1 for cos y = M1 for cos–1 A1 for 72.0 – 72.1 OR M1 for or 141.4(2) or or A1 for 154.5(9) M1 for tan y = M1 for tan–1 A1 for 72.0 – 72.1
6849_08b_5am2h_applications_unit_2h_-_november_2011_mark_scheme.docx