What is the exact value of cos(165∘)\cos(165^\circ)cos(165∘)?
−6−24\frac{-\sqrt{6}-\sqrt{2}}{4}4−6−2
2−64\frac{\sqrt{2}-\sqrt{6}}{4}42−6
6−24\frac{\sqrt{6}-\sqrt{2}}{4}46−2
6+24\frac{\sqrt{6}+\sqrt{2}}{4}46+2