/sci/ - Science & Math

Hey guys,

I could use a little help here. This is not HW but for an undergrad research project I am working on. Besides, its better than half the threads on page0 anyway.

If I have the values of cos(x) and sin(x), then how do I use this to find e^x

I am finding that it has to do with this:
http://en.wikipedia.org/wiki/Hyperbolic_function#Relationship_to_the_exponential_function
But I don't have sinh(x) and cosh(x), I just have sin(x) and cos(x)

wat do?

When I was around 11 years old, around Christmas, my Dad kept asking me what I wanted. Like every year, I never really wanted anything. This year, he tells me he had a really good idea and that I'd love it. On Christmas day, I open up my present. It was a microscope. I told him I didn't want it, and he returned it soon after Christmas. I'm 20 years old now, and I hate myself.