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| 1. |
If cot A +1/cotA =2 , find the value of (cot²A +1/cot²A) |
| Answer» Given cot A +1/cotA =2cot A + tan A =2Squaring on both sides we get,tan^2A+cot^2+2tanAcotA=4tan ^2A+cot^2A+2=4tan^2A+cot^2A=2 | |