A person standing 100 cm from a mirror notices that the angle of depression from his eyes to the bottom of the mirror is 10° while the angle of elevation to the top of the mirror is 12°. Find the vertical dimension of the mirror. Round to hundredths (in cm

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.