Agustín Valverde Ramos added Soluci_n_begin_aligned_cos__.tex  over 8 years ago

Commit id: e432604157993e5344d485bb11931e201c1f26cc

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Solución:  \[  \begin{aligned}  \cos(5\theta) & = \mathrm{Re}((\cos \theta+\mathrm{i}\sin\theta)^5) = \\  & = \mathrm{Re}() = \\  \end{aligned}  \]