allerysin(180° - θ) equals:
Acos θ
B-cos θ
C-sin θ
Dsin θ
Answer & Solution
Correct answer: D. sin θ
sin is positive in Q2: sin(180° - θ) = sin θ.
(Compare: cos(180° - θ) = -cos θ; tan(180° - θ) = -tan θ.)
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