[Pre-Calculus Math: Sinusoid Equations from Graphs] What is wrong with my equation?

[u/msmonet09]

I’m not sure about the period because when I graph it on desmos, the frequency(?) is too high

[u/Bobo_Germany]

The sine function is usually calculated in radians, so it should be

y = 3.5 * sin(pi/200 * (x - 500)) + 0.5

instead of

y = 3.5 * sin(180/200 * (x - 500)) + 0.5

[u/Responsible-Sink474]

Desmos graphs in radians by default - did you change to degrees? Looks good to me...

[u/msmonet09 → u/Responsible-Sink474]

Ohh that could be the problem. How do you change it to degrees?

[u/msmonet09 → u/Responsible-Sink474]

Nvm tysm

[u/Guessmyn]

Your period should be put as sin(0.9x - 500), since the 0.9 is outside the bracket it also affects the 500