Question

Question #71aff

Answer 1

The answer is the weird decimal number `cos^2(sqrt(-3)) ~= 0.02577`.

Explanation:

The cosine function really only outputs round fractions or whole numbers when some multiple of `pi` or a fraction of `pi` are input.

For example:
`cos(pi) = -1`
`cos(pi/2) = 0`
`cos(pi/4) = 1/sqrt(2)`

If you don't have pi in the input, you are guaranteed to receive a decimal output.