Question

Will fan and medal
What trigonometric function represents the graph?

f(x) = −2 cos(x − pi over 2)

f(x) = −2 sin(x − pi over 2)

f(x) = 2 cos(x − pi over 2)

f(x) = 2 sin(x − pi over 2)

Answer 1

@jim_thompson5910 can you help with this one too? I think it's the second one but I need a second opinion

Answer 2

you can use something like desmos to graph

https://www.desmos.com/calculator

Answer 3

it's a bit of a mess, but you'll see that the blue one is the one that fits
I've turned off the others so we can just focus on the blue one

Answer 4

so I agree: it is the second one

Answer 5

Thank you :)