In the triangle below, suppose that =m∠R+x7°, =m∠S−4x3°, and =m∠T3x°.
Find the degree measure of each angle in the triangle.

The correct answer will be d. -4

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.