Trigonometric EquationEasy
Question
If cot θ cot 7θ + cot θ cot 4θ + cot 4θ cot 7θ = 1 then θ =
Options
A.nπ, n∈Z
B.(2n + 1) π/2, n∈Z
C.nπ + (-1)n π/2, n∈Z
D.
, n ∈ Z
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