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In the interval [0, 2π), tan x = 1 for which pair of angles?
Aπ/4 and 7π/4
Bπ/4 and 5π/4
C3π/4 and 7π/4
Dπ/4 and 3π/4
Answer & Solution
Correct answer: B. π/4 and 5π/4
Tangent has period π and equals 1 at π/4, so the next solution is π/4 plus π, which is 5π/4.
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