Which of the following is not the value of \( \sin 27^{\circ}-\cos 27^{\circ} \) ? (1) \( -\frac...

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Which of the following is not the value of \( \sin 27^{\circ}-\cos 27^{\circ} \) ?
(1) \( -\frac{\sqrt{3-\sqrt{5}}}{2} \)
(2) \( -\frac{\sqrt{5-\sqrt{5}}}{2} \)
(3) \( -\frac{\sqrt{5}-1}{2 \sqrt{2}} \)
(4) none of these
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