deletions | additions       diff --git a/Soluci_n_begin_aligned_cos__.tex b/Soluci_n_begin_aligned_cos__.tex  index d6d6557..e99db8f 100644  --- a/Soluci_n_begin_aligned_cos__.tex  +++ b/Soluci_n_begin_aligned_cos__.tex 
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\[  \begin{aligned}  \cos(5\theta) & = \mathrm{Re}((\cos \theta+\mathrm{i}\sin\theta)^5) = \\  & = \mathrm{Re}(5\cos(t)\sin^4(t)−10\cos^3(t)\sin^2(t)+cos^5(t)) \mathrm{Re}(\cos^5 \theta−10\cos^3 \theta\sin^2 \theta+5\cos \theta\sin^4 \theta)  = \\ \end{aligned}  \]