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ksushasasha16 @ksushasasha16

July 2022 1 12 Report

корень из 2 sin 13п/8 cos 13п/8

Answers & Comments

kiskam

$\sqrt{2sin(\frac{13\pi}8)cos(\frac{13\pi}8)}=\sqrt{sin(2*\frac{13\pi}8)}=\sqrt{sin(\frac{13\pi}4)}=\\\\=\sqrt{sin(\frac{5\pi}4)}=\sqrt{-\frac{\sqrt2}2$

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