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

√2•cos 25°...

vaz06 @vaz06

April 2021 1 17 Report

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

Answers & Comments

Rechnung

Verified answer

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

7 votes Thanks 4

kakoj vid postembrionalnogo razvitiya soprovozhdaetsya razrusheniem lichinochnyh orga

Answer

vaz06 August 2022 | 0 Ответы

reshite uravnenie sin2 x 6 sin x cos x9cos2 x0

Answer

vaz06 August 2022 | 0 Ответы

1 ukazhite zhivotnyh dlya kotoryh harakterna konyugaciya kak forma razmnozheniya

Answer

vaz06 August 2022 | 0 Ответы

obshee elektricheskoe soprotivlenie uchastka cepi ris1 eslir1 r2 r3 2 om

Answer

vaz06 August 2022 | 0 Ответы

v kakom iz krezolov alkilnyj radikal i gidroksilnaya gruppa okazyvayut soglasova

Answer

vaz06 August 2022 | 0 Ответы

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

Answer

Answers & Comments

Verified answer

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

reshite uravnenie 2 cos 2x14 cos 2x2sin 2x

1 iodid natriya nai yavlyaetsya solyu4 slabogo osnovaniya i slaboj kisloty2 sil

1 odnoimennye polyusa postoyannyh magnitov1 ne vzaimodejstvuyut2 ottalkivayut

4 2b fx 3x 7v fx xg fx 3x

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

рекомендуемые вопросы

Helpful Links

Helpful Social