Помогите решить!!!!!! 54 \ sin(-28pi\3) * cos(23pi\6) =. Created by alinagunba99. algebra-ru

Помогите решить!!!!!! 54 \ sin(-28pi\3) * cos(23pi\6) =...

alinagunba99 @alinagunba99

July 2022 1 21 Report

Помогите решить!!!!!!

54 \ sin(-28pi\3) * cos(23pi\6) =

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NNNLLL54

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$\frac{54}{sin(-\frac{28\pi }{3})\cdot cos\frac{23\pi }{6}}= \frac{54}{-sin(9\pi +\frac{\pi}{3})\cdot cos(4\pi -\frac{\pi}{6})} = -\frac{54}{-sin\frac{\pi}{3}\cdot cos\frac{\pi}{6}} =\\\\= \frac{54}{\frac{\sqrt3}{2}\cdot \frac{\sqrt3}{2}} = \frac{54\cdot 4}{3} =18\cdot 4=72$

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alinagunba99 August 2022 | 0 Ответы

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