Hi. I know that there's a formula sheet available.
However, this is about more general formula that's not available in the exam.
An example was in the June 2010 paper, where you were required to recall 0.5ABsinC to answer a question. I'm aware this is an extremely common formula that I should have remembered- but since I did not when doing the past paper I was wondering if that there are any more such formula that could be required to recall during the exam? And if possible would somebody please suggest some of these?
Thank you and hope exams are going well .