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Resol l'equació: begin mathsize 12px style begin bold style cos open parentheses 2 times x plus 150 close parentheses equals 0.149 end style end style

Fes servir cos a = cos (-a)

Format del resultat: {x=31+90k,x=320+90k} graus arrodonits sense unitats i positius (sumeu 360º, si cal)

 

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