Question

The equation whose roots are sec² a & cosec²a can be -
(A) 2x -x-1= 0
(B) x - 3x + 3 = 0 (C) x2 - 9x + 9 = 0
(D) x² + 3x + 3 = 0​

Answer 1

sum of root = product of root

sec2a+cosec2a

so the suitable equation is x2 - 9x + 9

.