1) sin (π/2 + α) = cos α = 2.2) ctg (360 - α) = cot (360 - α) = 3.3) sin (2π + α) = sin α4) tg (3π/2 - α) = tan (3π/2 - α)5) sin (270 - α) = -cos α
1) sin (π/2 + α) = cos α = 2.
2) ctg (360 - α) = cot (360 - α) = 3.
3) sin (2π + α) = sin α
4) tg (3π/2 - α) = tan (3π/2 - α)
5) sin (270 - α) = -cos α