The elimination of theta from x cos thet...

The elimination of `theta` from `x cos theta+ysin theta=2` and `xsin theta-y cos theta=4` will give:
`

A

`x^(2)-y^(2)=20`

B

`3x^(2)+y^(2)=20`

C

`x^(2)+y^(2)=20`

D

`3x^(2)-y^(2)+20`

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The correct Answer is:

C

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