If \( x+i y=\frac{3}{2+\cos \theta+i \sin \theta} \), then \( x^{2}+y^{2} \) is equal to
(A) \( ...
If \( x+i y=\frac{3}{2+\cos \theta+i \sin \theta} \), then \( x^{2}+y^{2} \) is equal to
(A) \( 3 x-4 \)
(B) \( 4 x+3 \)
(C) \( 4 x-3 \)
(D) None of these
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