dla α € [0°;180°] prawdziwe są zależności

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Question		Answer
sin²a + cos²a start learning		1
sin a / cos a start learning		tg a dla a ≠ 90°
cos a/sin a start learning		ctg a dla a ≠ 0°, 180°
1/ tg a start learning		ctg a dla a ≠ 0° 90° 180°

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