If \( f(x)=\left\{\begin{array}{c}\frac{\sin 2 x}{5 x}, \text { whe...

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If \( f(x)=\left\{\begin{array}{c}\frac{\sin 2 x}{5 x}, \text { when } x \neq 0 \\ k, \text { when } x=0\end{array}\right. \) is continuous at \( x=0 \),
\( \mathrm{P} \) then the value of \( k \) will be

W
(1) 1
(2) \( 2 / 5 \)
(3) \( -2 / 5 \)
(4) \( 2 / 3 \)
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