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Eliminate theta " from the equations" ...

Eliminate `theta " from the equations"`
`x="cosec"theta+cottheta`
`y="cosec"theta+cottheta`.

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Given, `x="cosec"theta+cottheta and y = "cosec"theta-cottheta`.
Multiplying these equations, we get
`xy=("cosec"theta+cottheta) ( "cosec"theta-cottheta)`
`"cosec"^(2)theta-cot^(2)theta = 1`.
Hence, the required relation is xy = 1 .
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