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cosecA+cotA=2/3 => cosA=...

`cosecA+cotA=2/3` => cosA=

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`cosec A + cota = 2/3`
`=> 1/sinA + cosA/sinA = 2/3`
`=>(1+cosA)/sinA = 2/3`
`=>(1+cosA)/sqrt(1-cos^2A) = 2/3`
Squaring both sides,
`=>(1+cosA)^2/(1-cos^2A) = 4/9`
`=>(1+cosA)^2/((1-cosA)(1+cosA)) = 4/9`
`=>(1+cosA)/(1-cosA) = 4/9`
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