[tex]tgx = \sqrt[2]{2} / 2 \\[/tex]
Para calcular o valor da tangente, basta dividir o seno pelo cosseno.
[tex]tgx = senx / cosx\\\\tgx = 1/5 : \sqrt[2]{2}/5\\\\tgx = (1/5). (5 / \sqrt[2]{2}\\\\tgx = 5 / 5.\sqrt[2]{2} \\\\tgx = 1 / \sqrt[2]{2}\\\\tgx = 1.\sqrt[2]{2} / \sqrt[2]{2}.\sqrt[2]{2} \\\\tgx = \sqrt[2]{2} / 2\\[/tex]
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