\( \sin ^{2} 2^{\circ}+\sin ^{2} 4^{\circ}+\sin ^{2} 6^{\circ}+\cdots+\sin ^{2} 90^{\circ}= \) (...

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\( \sin ^{2} 2^{\circ}+\sin ^{2} 4^{\circ}+\sin ^{2} 6^{\circ}+\cdots+\sin ^{2} 90^{\circ}= \)
(a) 22
(b) 23
(c) 44
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