Could someone please help me to check my answer whether is answering the question? Also, can you please leave your answers below as a reference?

Could someone please help me to check my answer whether is answering the question? Also, can you please leave your answers below as a reference?

Thank you so much... I am very poor in this chapter..

a) y= sin x

b) y= cos x

c) y= -sin x

d) y= cos(π/2 +x)

e) y= sin(π/2 +x)

The graph of y= -sin x is a same as the graph of y= cos(π/2 +x), whereas the graphs of y= cos x and y= sin(π/2 +x) are equal. The transformation which is horizontal shifting 1.57 units to the left will and it will make y= cos x and y= sin(π/2 +x) equal.  The another transformation of horizontal shifting 1.57 units to the right to make y= -sin x and y= cos(π/2 +x) equal.