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$(4 c o t^{2} \frac{𝝅}{3} + s e c^{2} \frac{𝝅}{6} - \sin^{2} \frac{𝝅}{4})$ का मान है ?

1
$\frac{5}{2}$
2
$\frac{17}{6}$
3
$\frac{13}{6}$
4
$\frac{19}{6}$

Answer:- 3

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