Question

f(x) = −3 sin(x − pi over 2)

f(x) = −3 cos(x − pi over 2)

f(x) = 3 cos(x − pi over 2)

f(x) = 3 sin(x − pi over 2)

Answer 1

first of all from the graph u can say that its a sine curve because it starts from origin
ok?