Math / TrigonometryQuestion Find the cosine of -67.5 degrees.Studdy SolutionConclude that the final value of cos(−67.5∘)\cos(-67.5^{\circ})cos(−67.5∘) is the same as cos(67.5∘)\cos(67.5^{\circ})cos(67.5∘).cos(−67.5∘)=12(2+2−2−2) \cos(-67.5^{\circ}) = \frac{1}{2}(\sqrt{2 + \sqrt{2}} - \sqrt{2 - \sqrt{2}}) cos(−67.5∘)=21(2+2−2−2)View Full Solution - FreeWas this helpful?
