TRG012 · Trigonometry · Classes 10–12
Sine Wave
The graph of y = A sin(Bx): a smooth repeating wave.
Sine Wave📐 Formula
Amplitude = |A|; period = 2π ÷ |B|
✏️ Worked example
A = 2, B = 1: amplitude 2, period 2π ≈ 6.28.
🌍 Where it is used
Sound, light, AC electricity and tides.
❓ Quick check
Period of y = sin 2x: