Упростите выражение: [tex] \frac{1-2sin^2 \alpha }{2tg(45°- \alpha )cos^2(45°- \alpha )} [/tex]. Created by aliso4chka. algebra-ru

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Упростите выражение: [tex] \frac{1-2sin^2 \alpha }{2tg(45°- \alpha )cos^2(45°- \alpha )} [/tex]

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abduqodirovaziz $\frac{cos2\alpha}{2\frac{sin(45-\alpha)}{cos(45-\alpha)}*cos(45-\alpha)}=\frac{cos2\alpha}{2sin(45-\alpha)*cos(45-\alpha)}=\frac{cos2\alpha}{sin(90-2\alpha)}=\frac{cos2\alpha}{cos2\alpha}=1$

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abduqodirovaziz пусть мастера проверят ок?

aliso4chka ок

abduqodirovaziz В знаменателе первой дроби пропустил 2 дробь * cos^2(45-a) будет , а я взял и сократил

1v treugolnike avs ugol s raven 90 as51 vs7 najdite sin a 2v treugol89aeb931323657b36223d81535bbec7a 10409

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aliso4chka July 2022 | 0 Ответы

tex najdite cos a2 v treugolnike avs ugol s 90 gradusov cos a08 najdite

Answer

aliso4chka July 2022 | 0 Ответы

v treugolnike avs asvs av4cos a01 najdite as

Answer

aliso4chka July 2022 | 0 Ответы

1v treugolnike avs ugol s raven 90 as51 vs7 najdite sin a 2v treugol

Answer

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tex najdite vs 4 v treugolnike avs ugol s raven 90as20 vs14 najdite

tex najdite cos a 2 v treugolnike avs ugol s 90 gradusov cos a08 najdit

tex najdite tga4b60814c188e1a9a65faaa180997a44e 5926

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1v treugolnike avs ugol s raven 90 as51 vs7 najdite sin a 2v treugol89aeb931323657b36223d81535bbec7a 10409

tex najdite cos a2 v treugolnike avs ugol s 90 gradusov cos a08 najdite

v treugolnike avs asvs av4cos a01 najdite as

1v treugolnike avs ugol s raven 90 as51 vs7 najdite sin a 2v treugol

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