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21 March, 18:17

Describe why the tangent ratio is positive only in quadrants 1 and 3

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  1. 21 March, 21:09
    0
    Between 0° and 90° [1st quadrant] tan Ф is always increasing, then positive:

    tan (0°) = 0

    tan (30°) = √ (3) / 3 = 0.577

    tan (45°) = 1

    tan (60°) = √3 = 1.732

    tan (89°) = 57.28

    We also know that tan (Ф) = tan (180° + Ф) [ 3rd quadrant]

    The same logic as above applies
  2. 21 March, 21:58
    0
    "I don't want to think about that right now. It's like complicated" - my sister
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