Story

Theta was sulky as usual. The "bad" tangent functions had once again tossed him around, roughed him up. Completely crazy. Those guys. I mean how can you send a nice, sweet looking, innocent theta all the way to infinity just because it has taken a 90 degree value ? Wheres the law ? Look at the Sines and Cosines, such nice people, never bothering anybody, just living their lives peacefully. Like sea-horses. Up, down, up then down, then again up. Always staying the 1 and -1 range. Such nice guys. I love them. So does theta.

Tan, on the other hand, is evil, for sure. But then how come he can do what he want ? After all he is just one silly little function. How come he can send people across from negative infinity to positive infinity ? That too in a matter of what, 180 degrees ! Unbelievable, thought our dear friend Theta. So as they say, "Don't complain about the darkness, light a lamp". Theta set out on his journey to find why and how is this possible. With two nice guys around, how come a mean guy can be so mean and get away with it ? So he went, to God.

God was his usual self, smiling in a silly sort of way He smiles. Theta protested, "when you made trigonometry, you sent three guys to call the shots, two of them nice and one evil, how come the evil guy does what he want, and the nice guys don't do anything".

God, sympathetically said : "Son, "Sine Theta"/"Cosine Theta" = "Tan Theta" When Good people are divided, The Evil guy triumphs".