Evening all,

Just began revising my Higher maths.. the night before the prelim. Wasn't smart - i know.

Ive come across a slight problem.. i have no idea how to do this question.

Solve these equations, correct to 1 decimal place where necessary, for 0<=x>=360.

5cos2x - cosx + 2 = 0

I have absolutely no idea how i go about these type of questions. If you could help me with this one i'll hopefully be able to do others.

Thanks,

-Allan