A:y=sin(2x+π2)
B:y=cos(2x+π2)
C:y=sin(x+π2)
D:y=cos(x+π2)
Look! This is 1 apple tree. I can see many 2. The apples 3red. They are round. How are they? They are 4. Apples, apples, I love 5. An apple a day keeps the doctor away.