Does anybody know what came first for trigonometric functions?

[kramer733]

I want a timeline for trigonometric function and how it was developed. Just like who created it and stuff like that. Did the greeks know about trigonometric functions? Is a tangent in calculus the same as a tangent in trigonometry and the function os a trigonometry? How do trigonometric functions apply to right angle triangles?

 

[HallsofIvy]

As usual, Wikipedia has a good article on that:
http://en.wikipedia.org/wiki/History_of_trigonometry

 

[Omega_Prime]

Nice read!