alleryIn which quadrant is sin θ positive and cos θ negative?
AIII
BI
CIV
DII
Answer & Solution
Correct answer: D. II
Quadrant II (90° < θ < 180°): sin > 0, cos < 0, tan < 0. ASTC rule: All in I, Sin in II, Tan in III, Cos in IV (positive).
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