mairie0708zl

2022-01-30

How to solve $\mathrm{cos}\left(\theta +\mathrm{\angle }\right)$ equation?
I cant

terorimaox

Expert

Your step is ok, but it misses the "second" solution:
$\theta +\frac{\pi }{3}=±\left\{\mathrm{arccos}\left(\frac{1}{\sqrt{3}}\right\}\right)$
Move the $\frac{\pi }{3}$ over and you are done!

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