Recent content by gorlitsa

Thank you! I got thrown into this class half way through the year, and while I have re-learned the calc, my trig is horrible. Thank you!

Homework Statement \stackrel{lim}{x\rightarrow 0}\frac{cos^2x-1}{2xsinx} Homework Equations \stackrel{lim}{x\rightarrow 0}\frac{1-cosx}{x}=0 \stackrel{lim}{x\rightarrow 0}\frac{sinx}{x}=1 The Attempt at a Solution I found this problem online (and can't remember where). It...