Решить уравнение 2cos^ 2x+sin2x-1=0. Created by Desillionpluh. algebra-ru

Решить уравнение 2cos^ 2x+sin2x-1=0...

Desillionpluh @Desillionpluh

August 2022 1 16 Report

Решить уравнение
2cos^ 2x+sin2x-1=0

Answers & Comments

Удачник66

Verified answer

2cos^2 x - 1 = cos 2x
cos 2x + sin 2x = 0
√2*(cos 2x*1/√2 + sin 2x*1/√2) = 0
√2*(sin(pi/4)*cos(2x) + cos(pi/4)*sin(2x)) = 0
√2*sin (2x + pi/4) = 0
2x + pi/4 = pi*k
x = -pi/8 + pi/2*k

1 votes Thanks 0

( to allow) of my future visits 2 Who to sleep now? 3You ( to fix) your car yes...

Answer

Desillionpluh July 2022 | 0 Ответы

kak opredelit znak v trigonometricheskom vyrazhenii esli my eto mozhem sdelat i

Answer

Desillionpluh July 2022 | 0 Ответы

radius

Answer

Answers & Comments

Verified answer

3 zadanie srochno66d32b0174c1bf60d5c7b841b8045327 30923

perepishite stavya nuzhnye znaki prepinaniya

2 + a)...

zadaniya 7 i 8 s obsneniem

reshit irracionalnoe neravenstvo42b928906170037c24f4b68f1292f266 66507

reshit uravnenie sin2 xcos x

2 zadanie srochno241b28cc44dd3cf12542e0febc3ba62c 56171

( to allow) of my future visits 2 Who to sleep now? 3You ( to fix) your car yes...

kak opredelit znak v trigonometricheskom vyrazhenii esli my eto mozhem sdelat i

radius

рекомендуемые вопросы

Helpful Links

Helpful Social