Question

Find the limit as x approaches pi/4

tanx

I made that into (sin pi/4)/(cos pi/4) but not sure what the next step is?

Answer 1

why not just put x= pi/4
and find what tan (pi/4) is ...

Answer 2

of if you really want to use
tan = sin/ cos

you just need to find values of sin pi/4 and cos pi/4
if you have not remembered it yet, use the unit circle!