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If x=atan theta and y=b sec theta then...

If `x=atan theta and y=b sec theta` then

A

`(y^2)/(b^2)-(x^2)/(a^2)=1`

B

`(x^2)/(a^2)-(y^2)/(b^2)=1`

C

`(x^2)/(a^2)+(y^2)/(b^2)=1`

D

`(x^2/a^2)-(y^2/b^2)=0`

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