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| 1. |
If $cosec^{4}A - cosec^{2}A$ = x, then value of x is?1). $tan^{4}A+ tan^{2}A$2). $cot^{4}A + cot^{2}A$3). $cot^{4}A - cot^{2}A$4). $tan^{4}A - tan^{2}A$ |
| Answer» CORRECT ANSWER is: $COT^{4}A + cot^{2}A$ | |