2)
(a) i(t) leads v(t) by 20°
(b) v2(t) leads v1(t) by 170°
(c) y(t) leads x(t) by 9.24°
3)
(a) -0.4243 + j4.97
(b) 0.4151 − j0.6281
(c) 109.25 – j31.07
4)
(a) 60 cos(t + 15°)
(b) 10 cos(40t + 53.13°)
(c) 2.8 cos(377t – π/3)
(d) 1.3 cos(103 t + 247.4°)
5)
(a) 3.32 cos(20t + 114.49°)
(b) 64.78 cos(50t – 70.89°)
(c) 9.44 cos(400t – 44.7°)
6)
4.789cos(200t - 16.7° ) A
7)
266.1cos(200t - 3.896° ) mA
8)
i=4.472 cos(3t – 18.43°) A
V=17.89 cos(3t – 18.43°) V
9)
i= 10 cos(4t + 36.87°) A
V= 41.6 cos(4t + 33.69°) V
10)
414.5cos(10t–71.6˚) mA
11)
v(t) = 6.325 cos(t – 18.43°) V
12)
vo(t) = 17.14 sin(200t + 90°) V or vo(t) = 17.14 cos(200t) V