Question:

The height of the pole of the wind turbine at Exhibition Place in Toronto is 94 m. It has 3 blades each measuring 24 m in length. The blades turn at a frequency of 20 revolutions per minute (hint: how long for one revolution?). Determine a sinusoidal (sine or cosine) function which will model the height of one of the blades which starts at the lowest point above the ground.

I got the answer h(t)= -24cos(120-x)+94, I know it is wrong but I'm not sure how to fix it so I can graph it on desmos.