Matematika

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\(\tan\!\left(\frac{7\pi}{6}\right) = \tan\!\left(\frac{\pi}{3}\right)\)

\(\tan 400^\circ = \tan 20^\circ\)

\(\tan\left(\frac{5\pi}{4}\right) = \tan\left(\frac{\pi}{4}\right)\)

\(\tan(210^\circ) = \tan(30^\circ)\)

\(tg(150^\circ) = tg(30^\circ)\)