Вычислите: а) 2sin60° + ctg ( - π/6) б) cos 7π/4 + tg540° . Created by Lu14. algebra-ru

4 + tg540° ...

Lu14 @Lu14

July 2022 1 11 Report

Вычислите:

а) 2sin60° + ctg ( - π/6)

б) cos 7π/4 + tg540°

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Verified answer

$\displaystyle 2sin(60)+ctg(-\frac{\pi}{6})=2*\frac{\sqrt{3}}{2}- ctg(\frac{\pi}{6})=\sqrt{3}-\sqrt{3}=0$

$\displaystyle cos(\frac{7\pi}{4})+tg(540)=cos(\pi-\frac{\pi}{4})+tg(360+180)=\\\\=cos(\frac{\pi}{4})+tg(\pi)=\frac{\sqrt{2}}{2}+0=\frac{\sqrt{2}}{2}$

6 votes Thanks 13

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Lu14 June 2022 | 0 Ответы

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Lu14 June 2022 | 0 Ответы

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cosa 08 270 lt a lt 360 najti ctg90 a

za 8 karandashej i 5 tetradej zaplatili 417 tenge a za 2 karandasha i 1 tetrad6197111b4499136140bd1875fcf6e9e8 98107

za 30 minut kater prohodit po techeniyu reki 45 km najdite skorost techeniya reki

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