Найдите значение выражения sin 70° +sin 20°/√2•cos 25°. Created by vaz06. algebra-ru

√2•cos 25°...

vaz06 @vaz06

April 2021 1 16 Report

Найдите значение выражения sin 70° +sin 20°/√2•cos 25°

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$\frac{sin70+sin20}{ \sqrt{2}cos25}= \frac{2sin \frac{70+20}{2}cos \frac{70-20}{2} }{\sqrt{2}cos25} = \frac{2sin45cos25}{\sqrt{2}cos25}= \frac{2 \frac{ \sqrt{2} }{2} }{ \sqrt{2} }= \frac{ \sqrt{2} }{ \sqrt{2} }=1$

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kakoj vid postembrionalnogo razvitiya soprovozhdaetsya razrusheniem lichinochnyh orga

reshite uravnenie sin2 x 6 sin x cos x9cos2 x0

1 ukazhite zhivotnyh dlya kotoryh harakterna konyugaciya kak forma razmnozheniya

obshee elektricheskoe soprotivlenie uchastka cepi ris1 eslir1 r2 r3 2 om

v kakom iz krezolov alkilnyj radikal i gidroksilnaya gruppa okazyvayut soglasova

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dlya kakoj iz dannyh funkjiifh funkciya fhcos 3x cos p yavlyaetsya pervoobraznoa83539cd1aacba31a99b6bf93bfcf55e 56462

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