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| 1. |
If cot square a -5cot a=-1, find the value of cot square a + tan square a |
| Answer» Cot square a - 5cot a= - 1Cot a (cot a - 5) = - 1Cot a - 5 = - 1/cot aCot a - 5 = - tan aCot a + tan a = 5 Squaring both sides (cot a + tan a) squre = 5 squareCot square a + tan square a + 2 cot a tan a = 25Cot square a + tan square a + 2*1 = 25Cot square a + tan square a + 2 = 25Cot square a + tan square a =23 | |