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Sine is negative one half at which two angles of a single revolution?
A5π/6 and 7π/6
B7π/6 and 11π/6
Cπ/6 and 5π/6
D4π/3 and 5π/3
Answer & Solution
Correct answer: B. 7π/6 and 11π/6
Sine is negative in the third and fourth quadrants, giving π + π/6 = 7π/6 and 2π - π/6 = 11π/6.
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