Finding tan x of a Circle

[kstategirl1213]

Here's my intro so you understand why I'm not getting this. I'm a junior in college. I've taken pre-calc, and I'm just now starting calc 1. We are going through a bunch of Trig stuff right now and the only Trig I have had is about a week in my sophomore year of high school during geometry.

I'm currently working on an online math program that my class requires called "My Math Lab".

The problem is: (Sorry I couldn't figure out how to get the picture any larger or better quality. I'm new at this, too! If you click on it, you can at least read it!)


So I have no idea where to go form here. My professor is an extremely smart man from India, and I tried talking to him after class about Trig, but for some reason he can't explain it in a way I understand.

I don't need the answer. If someone could maybe explain to me how to go about solving it, I would really appreciate it!

 

[tkhunny]

tan(x) = sin(x) / cos(x) where cos(x) is not zero.

What happens when sin(x) = cos(x)?

Where does sin(x) = cos(x)?

 

[mmm4444bot]

I'm a junior in college.

I'm just now starting calc 1.

the only Trig I have had is about a week in my sophomore year of high school during geometry.

What kind of college allows students without trigonometry to enroll in calculus courses?