Trigonometry practice worksheet with graphing sine and cosine functions, including amplitude, period, and key points.
A worksheet titled "6.4 Day 3 Graphing Sine/Cosine Practice WS" with handwritten answers, showing two problems involving graphing trigonometric functions. Problem 1 is y = 2cos x on [0°, 360°], with labeled amplitude, period, and key points. Problem 2 is y = -3sin(1/2)x, with a sketch of one cycle and labeled amplitude, period, and key points.