Need Help With A Vector Equation



Hi all
I need help to solve for Xb in the equation:

Zt=(Ra+jXa)+(Rb+jXb)

The right hand terms (Ra+jXa)+(Rb+jXb) are impedance terms
where resistance Ra is added to reactance Xa, and
resistance Rb is added to reactance Xb, then the total
impedance is Zt.

Filling in values from measurements give the following values

Zt = 8.393
Ra = 5.685
Xa = 3.672
Rb = 1.862

Or in equation form as above

Zt=(Ra+jXa)+(Rb+jXb)

8.393 = (5.685 + j3.672) + (1.862 + jD)

D = ? (apparently negative)

Any assistance will be appreciated.

.



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