Explanation

A sinusoidal equation involves sine or cosine and creates a wave-shaped graph.

Basic forms:
y = sin(x)
y = cos(x)

Key properties:

• Amplitude: height of the wave

• Period: length of one full cycle

• Midline: average value

Quiz

1. What shape does y = sin(x) make?

2. What does amplitude measure?

3. What does period represent?

4. Is cosine also sinusoidal?

5. Do sinusoidal graphs repeat?

Answer Key

1. Wave

2. Height

3. Length of one cycle

4. Yes

5. Yes