All the trig I need for AP Calculus AB

C – cos & sec function positive in Quad IV. 30° = 60° 45° 45° sin cos tan. csc sec cot. sin cos tan. csc sec cot (0,1) (0, -1) Reference Angles ( ) ---- Positive, acute angles . Quad I - reference angle is itself . Quad II - Quad III - Quad IV - ................
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