[Potironette]

"Luck. How do you do question number 4?" The teacher asked, turning around to glare at the offensive student who sighed.

Luck balked. "Four sir?" He asked, stalling for time.

"Yes, four. Did you do the homework?"

"I did the homework but I forgot how I did it." Luck replied.

The shake of a head. The teacher moved onto another victim.

Blitzel raised his hand.
The teacher glared at him and refused to call on him.

The answer turned out to have something to do with sin(x+y) = sinx*cosy + siny*cosx