Question 21Evaluate \(\cos 75°\), leaving the answer in surd form.A.\(\frac{\sqrt{2}}{2}(\sqrt{3} + 1)\)B.\(\frac{\sqrt{2}}{4}(\sqrt{3} - 1)\)C.\(\frac{\sqrt{2}}{4}(\sqrt{3} + 1)\)D.\(\frac{\sqrt{2}}{2}(\sqrt{3} - 1)\)Objective Show full explanation