(a) Express v = 8 cos(7t = 15°) in sine form. (b) Convert i = -10 sin(3t - 85°) to cosine form

Question

(a) Express v = 8 cos(7t = 15 ^{o} ) in sine form.

(b) Convert i = -10 sin(3t - 85 ^{o} ) to cosine form

Accepted Answer

(a) v = 8 cos(7t + 15°) = 8 sin(7t + 15° + 90°) = 8 sin(7t + 105°)

(b) i = -10 sin(3t – 85°) = 10 cos(3t – 85° + 90°) = 10 cos(3t + 5°)

Question : (a) Express v = 8 cos(7t = 15°) in sine form. (b) Convert i ...