Sinusoids
Sine wave: x(t) = Xmsinωt
Xm : amplitude, maximum value, or peak value
ω : radian or angular frequency
ωt : argument of the sine function
x(ωt + 2π) = x[ω(t + T)] = x(ωt)
T= 2π /ω : period, x(t + T) = x(t)
f = 1/T = ω/2π : frequency in Hertz (cycle/sec)
ω = 2π /T = 2π f
Phase-shifted sine wave
x(t) = Xmsin(ωt + θ)
θ : phase angle
RLC는 θ와 진폭에 영향을 준다.
Basic Trigonometry
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