▲ 1 r/alevelmaths
for example: if the question asks you to show that cosnx is equivalent to ...... instead of writing out the whole expansion i could just draw the triangle and then cross some number and put pluses and minus signs in front which means i cut out 2 of the steps. if i draw an arrow next to it saying " expand and equate real parts/ imaginary parts " would i still get the method marks
u/Euphoric_Doughnut_14 — 11 days ago