1.

A line L makes intercept a and b on the coordinate axes. The axes are rotated through an angle theta in the positive direction, keeping the origin fixed. If the line L makes intercept p and q on the new coordinate axes, then 1/a^(2)+1/b^(2) =

Answer»

<P>`1/(p^(2)q^(2))`
`1/p^(2) -1/q^(2)`
`1/p^(2)+1/q^(2)`
`(PQ)/(p^(2)+q^(2))`

Answer :C


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