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Aratati ca tg60*/ctg30* x cos45*=\sqrt{2} [tex]\sqrt{2}[/tex]

Răspuns :

[tex] \frac{tg60}{ ctg30} \times cos45 = \frac{ \sqrt{3} }{ \sqrt{3} } \times \frac{ \sqrt{2} }{2} = 1 \times \frac{ \sqrt{2} }{2} = \frac{ \sqrt{2} }{2} [/tex]