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Does cos⁡(−75∘)=32⋅22+12⋅22?\cos \left(-75^{\circ}\right)=\frac{\sqrt{3}}{2} \cdot \frac{\sqrt{2}}{2}+\frac{1}{2} \cdot \frac{\sqrt{2}}{2} ?

Question 51

True/False

Does cos⁡(−75∘)=32⋅22+12⋅22?\cos \left(-75^{\circ}\right)=\frac{\sqrt{3}}{2} \cdot \frac{\sqrt{2}}{2}+\frac{1}{2} \cdot \frac{\sqrt{2}}{2} ?

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