To be fair math classes from MATH departments usually have only simple numeric calculations involved, the answer is usually small number fractions combined with

To be fair math classes from MATH departments usually have only simple numeric calculations involved, the answer is usually small number fractions combined with pi/e/squareroot of 2 (actually half of time is just 0 or 1). The goal is to force you use identities and manipulate algebraic expressions instead of typing a long long formula into the calculator.