13-4 The Sine Function Today’s Objective: I can graph the sine function.

xy 0

Domain: Range: Period: Amplitude: All real numbers – 1 ≤ y ≤ 1 2π2π 1 OR

Calculator [MODE]: Radians [WINDOW] Xmin = 0 Xmax = 2π Xscl = π/2 Ymin = – 2 Ymax = 2 Yscl = 0.5 Period of a Sine Curve

Calculator [MODE]: Radians [WINDOW] Xmin = 0 Xmax = 2π Xscl = π/2 Ymin = – 2 Ymax = 2 Yscl = 0.5 Amplitude of a Sine Curve

Amplitude = Period = Write an equation for the graph. Find amplitude and period for each equation. 3.. Amplitude = Period =

1.Find amplitude and period. 2.Plot 5 points: Midline points Beginning, End Middle Amplitude points Max Min 3. Sketch curve. Sketching a Sine Curve Graph Amplitude = Period = 5 points: midline – max– midline – min – midline

1.Find amplitude and period. 2.Plot 5 points 3.Sketch curve. Sketching a Sine Curve Graph Amplitude = Period = p. 856: odd 5 points: midline – max– midline – min – midline