A. nπ ± π/3: n ε Z
B. nπ + π/4: n ε Z
C. nπ+ (-1)nπ/6: n ε Z
D. nπ - π/3: n ε Z
The domain of Cos-1 (4x-9) is
If tan (cot x) = cot (tan x), then sin 2x=
If 4 cos θ.cos (1200+ θ). Cos (1200- θ)=1/2 then θ=
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