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$ tan\frac{A}{2}$is equal to1). $\frac{tanA}{1+ secA}$2). $\frac{1}{cosecA + cotA}$3). $\frac{tanA}{1+ cosecA}$4). $\frac{1}{secA+ cotA}$ |
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Answer» it from previous year ssc papers, OPTION 1 is the right ANSWER |
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