allerytan⁻¹(tan(3π/4)) =
Aπ/4
B-π/4 (tan(3π/4) = -1; arctan(-1) = -π/4)
Cπ
D3π/4
Answer & Solution
Correct answer: B. -π/4 (tan(3π/4) = -1; arctan(-1) = -π/4)
tan(3π/4) = -1. arctan(-1) = -π/4. Principal range of arctan is (-π/2, π/2). 3π/4 outside this.
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