If x1 , x2 , x3, x4 are the roots of the equation x4 - x3 sin2ß + x2 cos2ß -x cosß - sinß = 0, then tan-lx1 + tan-lx2 + tan-lx3 +tan-lx 4 is equal to A) ß B) (pi/2)-ß C) pi-ß D) -ß Share with your friends Share 3 Arun Kumar answered this 3 View Full Answer Mayur answered this if x1 x2 x3 x4 are roots of the equation x^4 - x^3sin2a + x^2cos3a - xcosa - sin a , thrn tan^-1 x1 + tan^-1 x2 + tan^-1 x3 + tan^-1 x4 = ? -4 Prass Add answered this This is right way 15
