Operator: Cosine

Operator: Cosine is a Number Spell Piece added by Psi. It will return the cosine of a number.

Some helpful values are:
 * $$0 = \cos({\frac{\pi}{2}}) = \cos({\frac{3\pi}{2}})$$
 * $$1 = \cos(0)$$
 * $$-1 = \cos(\pi)$$

It is unlocked in the lesson "Trigonometry."

Parameters

 * Target: Requires a number.