Given the length an athlete throws a hammer is a normal random variable with mean 50ft and standard deviation 5ft, what is the probability hebthrows between 50ft and 60 ft

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.

Its a right angled triangle not a right triangle

I'm sorry your problems aren't showing up on my end but i'd love to sorry