Question

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√2sin22,5 cos22,5

Answer 1

$\sqrt{2}Sin22,5^{0} Cos22,5^{0}=\sqrt{2}*\frac{1}{2} *2Sin22,5^{0}Cos22,5^{0}}=\\\\=\frac{\sqrt{2} }{2}*Sin45^{0}=\frac{\sqrt{2} }{2}*\frac{\sqrt{2}}{2}=\frac{2}{4} =\boxed{0,5}$