TrigonometryEasySum, Difference, and Multiple-Angle Formulas ShareSum, Difference, and Multiple-Angle Formulas · Easy problemFind the exact value of cos105∘\cos 105^\circcos105∘ using 105∘=60∘+45∘105^\circ = 60^\circ+45^\circ105∘=60∘+45∘.Check Show answer Walk through it step by step Practice more like this Review this concept