Basic AC Power POWER TRIANGLE Solution: 2. pf cos q q arctan I_L I_R cos arctan I_L I_R cos arctan 2.2 0.73 cos(arctan(   3)) cos(   71.5°) pf 0.32 3. P EIcos q (440)(2.3)(0.32) P 323.84  watts 4. Q EIsin q (440)(2.3)(0.948) Q 959.4  VAR Rev. 0 Page 7 ES-09