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 <question type="category"><category><text>1MA 01. TRIGONOMETRIA/1MA.01.5 EqTrigonomètriques</text></category></question>
 
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      <text>1MA.01.5.00DT EQUACIONS TRIGONOMÈTRIQUES</text>
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      <text><![CDATA[<table style="color: #006600; border: 4px solid #003300; float: none; text-align: left; vertical-align: top; margin-left: auto; margin-right: auto; width: 400px; background-image: url('http://insmilaifontanals.cat/none'); background-color: #ffffcc;" border="4" frame="void" rules="none">
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<p><span style="color: #003300; font-size: small;" data-mce-mark="1">Es resolen fàcilment, </span></p>
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<li><span style="color: #003300; font-size: small;" data-mce-mark="1">emprant la taula de les raons trigonomètriques dels angles de 0,30º,45º,60º,90º)</span></li>
<li><span style="color: #003300; font-size: small;" data-mce-mark="1">fent servir les funcions inverses de la calculadora (shift+sin, shift+cos, shift+tan)</span></li>
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<p><span style="font-size: small;">sina = sin(180º-a) = sin(π</span> <span style="font-size: small;">-a)</span>                                               </p>
<p><span style="font-size: small;">cosa = cos (-a) <br /></span></p>
<p><span style="font-size: small;">tga = tg(180º+a) = tg(π+a)</span></p>
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<p style="text-align: center;"><span style="color: #0000ff; font-size: large;" data-mce-mark="1"><strong> </strong></span></p>]]></text>
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