▲ 2 r/askmath
Need help solving trigonometric equations involving double angle formulae
This is how far I got the answer on the mark scheme is shown to be 7pi/6 or 11pi/6 I am unsure as to how they got this should I use special angle triangle? How to know when to use the 30,60,90 one or 45,45,90 triangle?
u/Jazzlike-Tell-4465 — 1 day ago