Simplify \( \cos 75^\circ \).
University of Ilorin MTH101 salang past question
- \(\frac{\sqrt{6} - \sqrt{2}}{4}\)
- \(\frac{\sqrt{6} + \sqrt{2}}{4}\)
- \(\frac{\sqrt{3} - 1}{2}\)
- \(\frac{\sqrt{3} + 1}{2}\)
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