Предмет: Алгебра, автор: veronikavoytovich16


2 \sin {}^{2} (x)  - 3 \sin(x)  + 1 = 0
допоможіть будь ласка​

Ответы

Автор ответа: m11m
1

Ответ:

Объяснение:

!!!!!!!!!!!!!!!!!!!!!!!

Приложения:
Автор ответа: KnightOff
1

2sin²x-3sinx+1=0

sinx=a

2a²-3a+1=0

D=b²-4ac=9-4*2*1=9-8=1

a1;2= 3±1 / 2*2= 1; 1/2

sinx=1 или sinx=1/2

sinx=1

x= π/2+2πk, k∈Z

sinx=1/2

x=(-1)^k arcsin1/2+πk, k∈Z

x = (-1)^k π/6 + πk, k∈Z

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