Ответ: x = П/2 +Пn , n ∈ Z .
Объяснение:
cos2x * cosx + sin2x * sinx = 0
cos( 2x - x ) = 0
cosx = 0
x = П/2 +Пn , n ∈ Z
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Ответ: x = П/2 +Пn , n ∈ Z .
Объяснение:
cos2x * cosx + sin2x * sinx = 0
cos( 2x - x ) = 0
cosx = 0
x = П/2 +Пn , n ∈ Z