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| 1. |
Secsqx+cosecsqx>4 |
| Answer» 1+tansqx+1+cotsqx equal to 2+tansqx+cotsqx now adding and subtracting 2 2+2+ tansqx +cotsqx-2 is equal to 4+(tansqx-cotsqx) hence proooved 4+something positive | |