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10 questions from this quiz
Between 0°0°0° and 90°90°90°
Quadrants I and III
180°180°180°
θ=180°+ref angle\theta = 180° + \text{ref angle}θ=180°+ref angle
Functions are periodic
Quadrants I and II
k×360°k \times 360°k×360°
Factoring or substitution
Divide 360°360°360° by 222
θ=360°−ref angle\theta = 360° - \text{ref angle}θ=360°−ref angle
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