sin^2*x/2, если cosx=10/11 и x∈(0;π/2).. Created by saintvsevolod. algebra-ru

Ответ:Объяснение:

2)...

saintvsevolod @saintvsevolod

July 2022 1 4 Report

sin^2*x/2, если cosx=10/11 и x∈(0;π/2).

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sergeevaolga5

Ответ:

$0,05$

Объяснение:

$cosx=\frac{10}{11}, x\in(0;\pi /2) => sinx>0=>sin^2\frac{x}{2}>0\\\\sin^2\frac{x}{2}=\frac{1-cosx}{2}=\frac{1-\frac{10}{11}}{2}=\frac{\frac{1}{11}}{2}=\frac{1}{22}=0,0(45)\approx0,05$

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