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JAMB - Mathematics (2018 - No. 40)

Tanθ is positive and Sinθ is negative. In which quadrant does θ lies
Second only
Third only
Fourth only
First and third only

คำอธิบาย

  First quadrant: Sin, Cos and Tan are all positive

  Second quadrant: Sin is positive, Cos is negative and Tan is negative

  Third quadrant: Tan is positive, Sin is negative and Cos is negative

  Fourth quadrant: Cos is positive, Sin is negative and Tan is negative

  The correct option is the third quadrant only where Tanθ is positive and Sinθ is negative

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