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         <title>Correction exercice 27 page 227</title>
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         <description><![CDATA[<div>Juliette</div>]]></description>
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         <pubDate>2018-03-15 18:31:27 UTC</pubDate>
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         <title>cenci jemmy</title>
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         <description><![CDATA[<div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;exercice 11 p.225<br><br>pour calculer la longueur PO je vais utiliser la tangente.<br>calcul:<br>tan(PNO)=PO/ON<br>tan(20)/1=PO/5,6<br>po=tan(20)*5,6/1<br>po=2,03</div>]]></description>
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         <pubDate>2018-03-18 14:43:11 UTC</pubDate>
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         <pubDate>2018-03-18 15:16:28 UTC</pubDate>
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         <title>Caradec Jérémie</title>
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         <description><![CDATA[<div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; exercice 10 page 225<br><br>pour trouver la longueur FR il faut utiliser la trigonométrie dans un triangle rectangle. Sachant que l'ont connait le coté opposé FA et l'angle FRA on utilise le sinus de l'angle FRA pour trouver FR<br><br>sin(FRA)=FA/FR<br>sin(43)=3.5/FR<br>3.5*1/sin(43)=5.13<br><br>FR=5.13 le coté FR et donc egale a 5.13 cm<br><br><br></div>]]></description>
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         <pubDate>2018-03-19 08:45:55 UTC</pubDate>
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         <title>Inès cruder</title>
         <author>ines_cruder</author>
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         <title>Exercice 15 p225</title>
         <author>ginpaul</author>
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         <description><![CDATA[<div>Fait par Erwan<br><br>1) Il faut utiliser le cosinus donc on fait :<br>sin (NFT) = côté opposé<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;------------------------<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;hypoténuse<br><br>sin (18) = côté opposé<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;------------------------<br>&nbsp; &nbsp; 1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 6,7<br><br>NT= 6,7*sin (18):1<br>NT= 6,372<br><br>2) Il faut utiliser le cosinus donc on fait :<br>cos (NFT) = côté adjacent<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;------------------------<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;hypoténuse<br><br>cos (18) = côté adjacent<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;------------------------<br>&nbsp; &nbsp; 1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 6,7<br><br>FT= 6,7*cos <br><br></div>]]></description>
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         <title>Thomas CAPRON</title>
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         <description><![CDATA[<div>exercice 3 p 224</div>]]></description>
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         <pubDate>2018-03-19 17:54:10 UTC</pubDate>
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         <title>Alice 28 p 224</title>
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         <title>Anass </title>
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         <description><![CDATA[<div>Exercice 1</div>]]></description>
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         <title>Alice 28 p 224</title>
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