If P1 and P2 be the length of perpendiculars from the origin upon the straight lines x secθ + ycosecθ = a and x cosθ – y sinq = a cos2θ respectively, then the value of 4P1 2 + P2 2.
A. a2
B. 2a2
C. a2/2
D. 3a2
Answer:A
If P1 and P2 be the length of perpendiculars from the origin upon the straight lines x secθ + ycosecθ = a and x cosθ – y sinq = a cos2θ respectively, then the value of 4P1 2 + P2 2.
A. a2 B. 2a2 C. a2/2 D. 3a2