Question

Вычислите: arccos(sin pi/8) Help Please !

Answer 1

Ответ:

Пошаговое объяснение:

sin α = cos(π/2 - x)

sin (π/8) = cos (π/2 -π/8) = cos (3π/8)

и тогда

arccos(sin pi/8) = arccos(cos(3π/8)) = 3π/8