if f(x)=cos2x+sec2x, then f(x) is ?

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$I f f (x) = c o s^{2} x + s e c^{2} x, t h e n$

f (x) = {cos}^{2} x + {sec}^{2} x

If $f (x) = \frac{1 + c o s 2 x + 8 s i n^{2} x}{s i n 2 x}$ . Then the minimum value of f(x) is

f (x) = c o s^{2} (x) + c o s^{2} (x + 120^{0}) + c o s^{2} (x - 120^{0})

(\frac{π}{3})

$I f f (x) = c o s^{2} x + s e c^{2} x, t h e n$

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