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[obm-l] Trigonometria

To: <obm-l@xxxxxxxxxxxxxx>
Subject: [obm-l] Trigonometria
From: "Jerry Eduardo" <jerry.eduardo@xxxxxxxxxxxx>
Date: Tue, 11 May 2004 18:35:25 -0300
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Alguem pode me dar uma dica de como

resolver o exercicio abaixo:

Mostre que:

tg40 = (sen30 + sen40 + sen50) / (cos30 + cos40 + cos50)

Grato,

Jerry

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