Ответ:
sin5x cos4x - cos5x sin4x = 1
sin(5x-4x ) = 1
sinx = 1
x=пи/2+2пи*k
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Ответ:
sin5x cos4x - cos5x sin4x = 1
sin(5x-4x ) = 1
sinx = 1
x=пи/2+2пи*k