Spring 2007 HW#5 Solution
1) Convert to phasors:
a)
x(t) = 3 cos (100t + π/3)
A =
3,
θ = 60 deg
b)
y(t) = 
4 sin (ωt + 47 deg)
= 
4 cos (ωt
– 43 deg)
= 4 cos (ωt + 137 deg)
A = 4
θ = 137 deg
c)
z(t) = 
2 cos (2πt + 2) + 4 sin (2πt
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 Spring '07
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