Рисунок во вложении.
sin(-27π/4) = sin(5pi/4) = -√2/2 На рисунке показано как это получилось
cos(31π/4) = cos(-pi/4) = √2/2
Y=8*(-5)+7= -40+7= -33. Ответ: y(-5)= -33.
-(3d+4) + (d-13) > 0
-3d - 4 + d - 13 > 0
-2d > 4
d < -2
Ответ: d < -2
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