помогите с алгеброй срочно нужно. Created by Vlad3259. algebra-ru

помогите с алгеброй срочно нужно...

Vlad3259 @Vlad3259

July 2022 1 3 Report

помогите с алгеброй срочно нужно

Answers & Comments

Universalka

Verified answer

$\frac{Sin\alpha}{1+Cos\alpha}+\frac{1+Cos\alpha }{Sin\alpha}=\frac{Sin^{2}\alpha+(1+Cos\alpha)(1+Cos\alpha)}{Sin\alpha(1+Cos\alpha)}=\frac{Sin^{2}\alpha+1+2Cos\alpha+Cos^{2}\alpha}{Sin\alpha(1+Cos\alpha)}=\frac{2+2Cos\alpha}{Sin\alpha(1+Cos\alpha)}=\frac{2(1+Cos\alpha)}{Sin\alpha(1+Cos\alpha)}=\frac{2}{Sin\alpha }$

Второй способ :

$\frac{Sin\alpha }{1+Cos\alpha}+\frac{1+Cos\alpha}{Sin\alpha}=\frac{2Sin\frac{\alpha }{2}Cos\frac{\alpha }{2}}{2Cos^{2}\frac{\alpha} {2}} +\frac{2Cos^{2}\frac{\alpha}{2}}{2Sin\frac{\alpha} {2} Cos\frac{\alpha}{2}}=\frac{Sin\frac{\alpha }{2}}{Cos\frac{\alpha }{2}}+\frac{Cos\frac{\alpha }{2} }{Sin\frac{\alpha}{2} }=\frac{Sin^{2}\frac{\alpha }{2}+Cos^{2}\frac{\alpha}{2}}{Sin\frac{\alpha }{2}Cos\frac{\alpha }{2}}=\frac{1}{\frac{1}{2}Sin\alpha}=\frac{2}{Sin\alpha}$

2 votes Thanks 1

Answers & Comments

Verified answer

testovye zadaniyasrochno pomogite

temperatura vozduha ravna 20s tochka rosy 8s najdite otnositelnuyu vlazhnost

pomogite pozhalujsta srochno nuzhno pyct imeetcya pocledovatelnoct ppoizvolnyx

s idealnym gazom nekotoroj massy byl proizvedyon process izobrazhennyj na risunk9e6dc7b4c9980069a255757db5fb1084 95601

revrite the sentenses in passive voise 1 the students could do that work withouacf4413f33132178ba6268f40120a95f 13176

deti igrali na obochine avtomagistrali vblizi svetofora cherez neskolko chasov ih

dany celoe chislo n veshestvennye chisla a1an verno li chto otricatelnyh chl

1)Put the verbs into the brackets in the Past Indefinite Tense: 1. He (to listen...

dano celoe chetyrehznachnoe chislo verno li chto vse chetyre cifry chisla razlichnyp

pomogite pozhalujstakrug vpisan v treugolnik abcugol aoc130najdite ugol abc

рекомендуемые вопросы

Helpful Links

Helpful Social