If 2y cos theta =x sin theta and 2x sec ...

If `2y cos theta =x sin theta and 2x sec theta -y cosec theta =3,` then `x ^(2) +4y^(2)=` ............... A) 4 B) -4 C) -2 D) 2

A

4

B

`-4`

C

`-2`

D

2

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The correct Answer is:

A

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