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Does cos⁡345∘=32⋅22−12⋅22\cos 345^{\circ}=\frac{\sqrt{3}}{2} \cdot \frac{\sqrt{2}}{2}-\frac{1}{2} \cdot \frac{\sqrt{2}}{2}

Question 62

True/False

Does cos⁡345∘=32⋅22−12⋅22\cos 345^{\circ}=\frac{\sqrt{3}}{2} \cdot \frac{\sqrt{2}}{2}-\frac{1}{2} \cdot \frac{\sqrt{2}}{2} ?

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