You tie a spherical balloon that is 2 feet in diameter to a stake in the ground the string is 15 feet long the wind blows and you observe that the top of the balloon is 8 feet over from the stake what is the height of the balloon

What the heck don’t understand

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.