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Poster has been reminded to post schoolwork in the Homework Help forums

- Homework Statement
- Calculate the power factor for each case:

v(t) = 540 cos(ωt + 15◦) V, i(t) = 2 cos(ωt + 47◦) A

v(t) = 155 cos(ωt − 15◦) V, i(t) = 2 cos(ωt − 22◦) A

- Relevant Equations
- Vrms=V/sqrt(2)

Irms=I/sqrt(2)

My attempt at solving this question:

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