CBSE Class 10 Answered
If cosec?-cot?=1/3
Then find cosec?+cot?
Asked by Amuthavalli Thayyal Gopala Krishnan | 12 Sep, 2013, 10:11: PM
Expert Answer
Given, cosec ? - cot ? = 1 / 3
Now, cosec2 ? - cot2? = 1
=> (cosec ? - cot ?) (cosec ? + cot ?) = 1
=> (cosec ? + cot ?) × 1 / 3 = 1
=> (cosec ? + cot ?) = 3
Answered by | 12 Sep, 2013, 10:20: PM
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