What is the length of the hypotenuse of the triangle ?

The hypotenuse is the longest side of the triangle. The diagonal one. The other two connected to the right angle, are the legs. You can find the hypotenuse with the Pythagorean theorem a^2+b^2=c^2 (a squared plus b squared equals c squared) the hypotenuse is C and the two legs are A and B

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.