a)
б)
; ; ;
Объяснение:
sin (8π + 2x) = cos x
sin 2x = cos x
2 sin x · cos x - cos x = 0
cos x (2sin x - 1) = 0
1) cos x = 0
2) 2sin x - 1 = 0
sin x = 1/2
б) х∈ [2π; 3π]
1)
k = 2
2)
m = 1
3)
n = 1
a)
б)
; ; ;
Объяснение:
a)
sin (8π + 2x) = cos x
sin 2x = cos x
2 sin x · cos x - cos x = 0
cos x (2sin x - 1) = 0
1) cos x = 0
2) 2sin x - 1 = 0
sin x = 1/2
б) х∈ [2π; 3π]
1)
k = 2
2)
m = 1
3)
n = 1