Перепишем как степени двух
2^-3*5/6*2^(2*2.5)*2^(1/2)+1/2*2=2^(-5/2+5+1/2)+1/4=2³+1/4=8 1/4
исправлено
sin10*sin50*sin70*2cos10/2cos10=sin20*sin50*sin70/2cos10
9х-4=10х
9х-10х=4
-Х=4
Х=-4
2х+7=6х
2х-6х=-7
-4х=-7
Х=1 3/4
-7+8=9х
1=9х
Х=1/9
1) 2x = πk, k∈ Z,
x = πk/2 , k∈ Z
2)2x = (-1)^narcSin(1/2) + nπ, n ∈Z
2x = (-1)^n*π/6 + nπ, n ∈Z
x = (-1)^n*π/12 + nπ/2, n ∈Z
3) Sinx = √2/2
x = (-1)^narcSin√2/2 + nπ, n ∈Z
x= (-1)^n*π/4 + nπ, n ∈Z
4) Cosx = √2/2
x = +-arcCos√2/2 +2πk, k ∈Z
x = +- π/4 + 2πk , k ∈Z