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Question 5 Part A Only. I tried converting polar form to rectangular form to add the AC voltage sources and converting it back to polar form. I got the angle (10.09 degree) right but not the r-value and I still can't seem to find my mistake. (I use my calculator for polar to rectangular form conversion vise versa)

My working is on this link: https://documentcloud.adobe.com/link/track?uri=urn:aaid:scds:US:51d470e1-906c-42f2-8a7c-aae15008c33d

Answer (5a): 23.568∠10.09 degrees

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  • \$\begingroup\$ Please type in your work instead of linking to it or, at a minimum, include an image of your work in your post. All information needs to be in your post rather than linked somewhere else. \$\endgroup\$ – Null Feb 25 at 12:59
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You just fell (slightly) at the final hurdle: -

enter image description here

You correctly arrived at 33.33 volts but that is peak voltage. The RMS is 23.568 volts i.e. \$\sqrt2\$ lower.

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