Maths Exams are Today

Paying respect to the thousands of students sitting their maths exams today, we are now simulating exam conditions in our office. For 150 mins, there is absolute silence, calculators and mobile phones are confiscated and we're having to scrawl away with paper and pen without resorting to modern technology. We're now trying to work out how to rewrite sine and cosine expressions, and doing complex arithmetic and we're heading towards a resounding fail.

You're doing it wrong.