If $\frac{(1 + secA)}{tanA}$ = x, then x is

If $\frac{(1 + secA)}{tanA}$ = x, then x is
1). $cot\frac{A}{2}$
2). $tan\frac{A}{2}$
3). $cosec\frac{A}{2}$
4). $sec\frac{A}{2}$

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