умоляю решите СРЛЧНО. Created by dogesuck. algebra-ru

умоляю решите СРЛЧНО...

July 2022 1 44 Report

умоляю решите СРЛЧНО

Answers & Comments

sirorion 1)a) $sin(\alpha+\beta)-2sin\beta*cos\alpha=sin\alpha*cos\beta+cos\alpha*sin\beta-2sin\beta*cos\alpha$ = $sin\alpha*cos\beta-sin\beta*cos\alpha=sin(\alpha-\beta)=1$
b) $sin^2\alpha-\frac{cos(\frac{\pi}{2}+\alpha)*sin(\pi-\alpha)}{tg(\pi-\alpha)*ctg(\frac{3*\pi}{2}+\alpha)}}=sin^2\alpha-\frac{-sin\alpha*sin\alpha}{-tg\alpha*-tg\alpha}=sin^2\alpha-cos^2\alpha$
2) $(cos32\circ+cos28\circ)^2+(sin32\circ-sin28\circ)^2=0.25+0.005=0.255$
3) $cos=\sqrt{1-sin^2}=\sqrt{\frac{169}{169}-\frac{144}{169}}=\frac{5}{13}$ ; $sin2\alpha=2*sin*cos=2*\frac{-12}{13}*\frac{5}{13}=\frac{-120}{169}$ ; $cos2\alpha=cos^2-sin^2=\frac{25}{169}-\frac{144}{169}=-\frac{119}{169}$

1 votes Thanks 0

Answers & Comments

s ploshad ramki 120 sm i magnitnaya indukciya 04 tl

100 ballov najdite pervoobraznuyu dlya funkcii

v kakih predelah dolzhna izmenyatsya induktivnost katushki kolebatelnogo kontura9bcae1fddcaf990a481ef43f7ca85bc5 71683

pomogite reshit pozhalujsta38660d15ff9db95bbd4141a93746cec2 39009

kolebatelnyj kontur sostoit iz katushki induktivnostyu l0004 gn i ploskogo kon

katushka induktivnostyu 005 gn prisoedinena k istochniku peremennogo napryazheniya s

reshite proizvodnuyu pozhalujsta997782763976716cf4e1a3f99a1a25f9 14987

proshu vashej pomoshi s proizvodnoj

pomogite reshit proizvodnuyu65641702b49f70e61f4fc59c5f9eceda 17574

pozhalujsta pomogite reshit23664dd55423934e39b9bbabcc1909af 35589

рекомендуемые вопросы

Helpful Links

Helpful Social