Which equation can be used to find the unknown length, b, in this triangle? 5 in
4 in
A) 4^2+b^2= 5^2
B) 4^2-b^2=5^2
C) 5² +b^2=4²
D) 5^2+b^2=4^2

Think of it as five or above give it a shove. change the 5 or above to the right to a zero and add one to the number on the left.

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.