- #1
Glissando
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Homework Statement
Find the limit:
lim (tanx-1)/(x-pi/4)
x->pi/4
Homework Equations
tanx = sinx/cosx
The Attempt at a Solution
lim (sinx/cosx-1)/(x-pi/4)
x->pi/4
lim [(sinx-cosx)/cosx]/(x-pi/4)
x->pi/4
I have no idea what to do after this ): I also tried squaring the whole function and getting tan2x-1 = sec2x, but I get so lost on what to do with pi/4 because it just keeps becoming undefined!
Thanks for your help!