2 tourists from america came to tamil nadu to explore the temples here.. they started visiting all the places and the temples in those places... they didn't miss out even one single temple... at last, they had only one temple to see. it was located an the most remote part of the state.. there was no road to that place.. after spending a lot of money, they somehow made it to that temple.. to their haplessness, they found the temple gate to be locked.. they set up a camp and stayed there for about a week trying to figure out a way to open the temple door.. an old man living in a village nearby told them that only a person who knows trigonometry can open that door.. so they went back to america, mastered trigonometry and came back after 2 years.. now they could open the door with ease.. when went inside to see the main deity.. to their surprise, there was a frame and in that was written "cos a"... why????

because in tamil, it is said that ""kaase(cos a) thaan kadavulada""... :D