1.

P_1 and P_2 are the length of perpendicular from origin to the line x sec theta + y cosec theta =a and x cos theta - y sin theta = a cos 2 theta then ….... of the following is valid.

Answer»

`4P_1^2 + P_2^2 = a^2`
`P_1^2 + 4P_2^2 = a^2`
`P_1^2 + P_2^2 = a^2`
NONE of these

Answer :A


Discussion

No Comment Found