26. Let \( \omega=\cos 3^{\circ}+i \sin 3^{\circ} \) then \( \sum_{r=1}^{10} \operatorname{Re}\left(\omega^{2 r-1}\right) \) equals
(1) \( \frac{1}{\sin 3^{\circ}} \)
(2) \( \frac{2}{\cos 3^{\circ}} \)
(3) \( \frac{\sqrt{3}}{4 \sin 3^{\circ}} \)
(4) \( \frac{\sqrt{3}}{2 \cos 3^{\circ}} \)