А)
3x + π/4 = π/3 + 2πn или 3x + π/4 = 2π/3 + 2πk
3x = π/12 + 2πn 3x = 5π/12 + 2πk
x = π/36 + 2πn/3 x = 5π/36 + 2πk/3
б)
x/3 - π/4 = 2π/3 + 2πn или x/3 - π/4 = - 2π/3 + 2πk
x/3 = 11π/12 + 2πn x/3 = - 5π/12 + 2πk
x = 11π/4 + 6πn x = - 5π/4 + 6πk
д)
4x - π/3 = πn
4x = π/3 + πn
x = π/12 + πn/4
з)
sinx(sinx - √3cosx) = 0
sinx = 0 или sinx - √3cosx = 0
x= πn tgx = √3
x = π/3 + πk
5(y+1,2)=12,5y
5y+6-12.5y=0
-7.5y+6=0
y=6/7.5
y=0.8
<span>4(3-2х)+24=2(3+2х)</span>
<span>36-8x-6-4x=0</span>
<span>30-12x=0</span>
x=30/12
x=2.5
<span>0,2(5у-2)=0,3(2у-1)-0,9</span>
<span>y-0.4-0.6y+0.3+0.9=0</span>
<span>0.4y+0.8=0</span>
y=-0.8/0.4
y=-2
А)7,б)8,в)16,г)24 - ответ