5...

August 2022 1 8 Report

чи можуть одночасно виконуватись рівності
sin a =корінь 3/5 і cos a = корінь 22/5

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$\displaystyle\bf\\Sin^{2} \alpha +Cos^{2} \alpha =1\\\\Sin\alpha =\sqrt{\frac{3}{5} } \ \ ; \ \ Cos\alpha =\sqrt{\frac{22}{5} } \\\\\\Sin^{2}\alpha +Cos^{2} \alpha =\Big(\sqrt{\frac{3}{5} } \Big)^{2} +\Big(\sqrt{\frac{22}{5} } \Big)^{2}=\frac{3}{5} +\frac{22}{5} =\frac{25}{5} =5\neq 1$

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