Ответ:
Г) - √2/2.
Объяснение:
sin (5π/4) = sin (π + π/4) = - sin (π/4) = - √2/2.
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Ответ:
Г) - √2/2.
Объяснение:
sin (5π/4) = sin (π + π/4) = - sin (π/4) = - √2/2.