Sin(П+d)-sin(3П/2-d))2+(cos(2П-2)+cos(П/2-d))2

Question

Sin(П+d)-sin(3П/2-d))2+(cos(2П-2)+cos(П/2-d))2

Answer 1

(-sina-(-cosa))*2-(cosa+sina)*2=-2sina+2cosa-2cosa+2sina=0