[math] \newcommand{\ex}[1]{\item } \newcommand{\sx}{\item} \newcommand{\x}{\sx} \newcommand{\sxlab}[1]{} \newcommand{\xlab}{\sxlab} \newcommand{\prov}[1] {\quad #1} \newcommand{\provx}[1] {\quad \mbox{#1}} \newcommand{\intext}[1]{\quad \mbox{#1} \quad} \newcommand{\R}{\mathrm{\bf R}} \newcommand{\Q}{\mathrm{\bf Q}} \newcommand{\Z}{\mathrm{\bf Z}} \newcommand{\C}{\mathrm{\bf C}} \newcommand{\dt}{\textbf} \newcommand{\goesto}{\rightarrow} \newcommand{\ddxof}[1]{\frac{d #1}{d x}} \newcommand{\ddx}{\frac{d}{dx}} \newcommand{\ddt}{\frac{d}{dt}} \newcommand{\dydx}{\ddxof y} \newcommand{\nxder}[3]{\frac{d^{#1}{#2}}{d{#3}^{#1}}} \newcommand{\deriv}[2]{\frac{d^{#1}{#2}}{dx^{#1}}} \newcommand{\dist}{\mathrm{distance}} \newcommand{\arccot}{\mathrm{arccot\:}} \newcommand{\arccsc}{\mathrm{arccsc\:}} \newcommand{\arcsec}{\mathrm{arcsec\:}} \newcommand{\arctanh}{\mathrm{arctanh\:}} \newcommand{\arcsinh}{\mathrm{arcsinh\:}} \newcommand{\arccosh}{\mathrm{arccosh\:}} \newcommand{\sech}{\mathrm{sech\:}} \newcommand{\csch}{\mathrm{csch\:}} \newcommand{\conj}[1]{\overline{#1}} \newcommand{\mathds}{\mathbb} [/math]

Evaluate the following limits.

• [math]\lim_{t\goesto0} \frac{\sin^2t}{t^2}[/math]
• [math]\lim_{t\goesto0} \frac{\sin t \cos t}{t}[/math]
• [math]\lim_{x\goesto0} \frac{1-\cos^2 x}{x^2}[/math]
• [math]\lim_{x\goesto0} \frac{\sin 2x}{x}[/math]
• [math]\lim_{t\goesto\pi} \frac{\sin(\pi - x)}{x(\pi - x)}[/math]
• [math]\lim_{t\goesto0} \frac{\sin2t}{\sin3t}[/math]
• [math]\lim_{x\goesto{\frac{\pi}2}} \frac{\cos x}{\left(\frac{\pi}2 - x\right)}[/math]
• [math]\lim_{x\goesto0} \frac{\cos x}{x}[/math]
• [math]\lim_{x\goesto0} \frac{1 - \cos 2x}{x^2}[/math]
• [math]\lim_{x\goesto0} \frac{1 - \cos x}{x \sin x}[/math].