SOLUCIÌN A LOS EJERCICIOS DE TRIGONOMETRÈA 1.a) b) c)si la
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π π +α = π α+ π −α = π π α− π +α = π π π −α = π α− π −α = α+ π +α = π − $ α =− α + α α= α− α= α= α= α− α= = α =− = α α= α= − − − α− = − α = α − α −( − α= − = − α= α= α α= α− = α= → − α− = α= − = − =− =− α)= α= = α= ( = '" ( α= '" ) = = α α= $ ! − %&!! α =− π − α =− α − = − α = α α= π + π α+ π ! α= π − α= − − α = + α !"# $ # # $ π +α = π α= = π α− π− + π π −α = π −α = π α = − α= → − = → + α= = → α