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###### Problem 13 (6 marks): For an angle 0, we have sin(0) = 0.4.Knowing that cos(0) < 0,find cos(0) and tan(0) without calculating the angle 0.

Problem 13 (6 marks): For an angle 0, we have sin(0) = 0.4.Knowing that cos(0) < 0,find cos(0) and tan(0) without calculating the angle 0.

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