deletions | additions       diff --git a/section_Q4_subsection_a_begin__.tex b/section_Q4_subsection_a_begin__.tex  index 109bda9..5ba41c2 100644  --- a/section_Q4_subsection_a_begin__.tex  +++ b/section_Q4_subsection_a_begin__.tex 
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&\geq \frac{1}{\cos \angle_{vuw} - \sin \angle_{vuw} } \qquad \text{as $\tau\geq \angle_{vuw}$ }\\  &=\frac{|uv|}{|uw|-|wv|}\\  &\geq\frac{|uw|}{|uv|-|wv|} \qquad \text{as $|uv| > |uw|$}\\  =RHS &=RHS  \ \ \square \end{align*}