`x = tan A, y = tan B,z = tan C`, and `x+y+z= xyz ⇒ A+B+C=3` (i)`(npi)/3` (ii)`(npi)/2` (iii)`npi` (iv)`(npi)/4`

If the middle term in the expansion of (1/x+xsinx)^(10) is equal to 7 7/8 , then the value of x is (i) 2npi+(pi)/6 (ii) npi+(pi)/6 (iii) npi+(-1)^(n)(pi)/6 (iv) npi+(-1)^(n)(pi)/3

The roots of the equation, cotx- cos x=1- cotx*cos x are : (i)npi+pi/4 (ii)2npi+pi/4 (iii)npi+pi/4 or 2npi+-pi (iv) (4n+1)pi/4 or(2n+1)pi; n in I

General solution of the equatin 1+sin^4 2x=cos^2 6x is (A) (npi)/3 (B) (npi)/2 (C) npi (D) none of these

x = npi - tan^-1 3 is a solution of the equation 12 tan 2x + sqrt10/cosx + 1 = 0 if

If 4sin^4x+cos^4x=1 ,then x is equal to (n in Z) (a) npi (b) npi+-sin^(-1)sqrt(2/5) (c) (2npi)/3 (d) 2npi+-pi/4

If 4sin^4x+cos^4x=1 ,then x is equal to (n in Z) (a) npi (b) npi+-sin^(-1)sqrt(2/5) (c) (2npi)/3 (d) 2npi+-pi/4

If 4sin^4x+cos^4x=1 ,then x is equal to (n in Z) (a) npi (b) npi+-sin^(-1)sqrt(2/5) (c) (2npi)/3 (d) 2npi+-pi/4

Which of the following sets can be the subset of the general solution of 1+c a s3x=2cos2x(n in Z)? (a) npi+pi/3 (b) npi+pi/6 (c) npi-pi/6 (d) 2npi

If 4sin^4x+cos^4x=1,t h e nxi se q u a lto(n in Z) npi (b) npi+-sin^(-1)sqrt(2/5) (2npi)/3 (d) 2npi+-pi/4

If alpha,beta, gamma re the roots of the equations x^3+px^2+2x+p=0 then the general value of tan^-1 alpha+tan^-1 beta+tan^-1 gamma is (A) npi (B) (npi)/2 (C) (2n+1) pi/2 (D) dependent upon the value of p.