`int1/(cos^6x+sin^6x)dx` is equal to
(A) `tan^-1(tanx-cotx)+c`
(B) `sin^-1(sin2x)+c`
(C) `tan^-1(tanx+cotx)+c`
(D) `cot^-1(tanx+cotx)+c`

int(cos4x-1)/(cotx-tanx)dx is equal to

int(cos 4x-1)/(cot x-tanx)dx is equal to

int(sin^2x-cos^2x)/(sin^2cos^2x)dx is equal to(A) tanx+cotx+c (B) tanx+cose cx+c (C) -tanx+cotx+c (D) tanx+secx+c

int tan^-1(cotx)dx

int[1+tanx.tan(x+alpha)]dx is equal to

int(1)/(tanx+cotx+secx+"cosec "x)dx is equal to

int(1)/(tanx+cotx+secx+"cosec "x)dx is equal to

intsqrt(1+2cotx(cotx+cos e cx))dx is equal to (A) 2I n(cos x/2)+c (B) 2ln(s in x/2)+c (C) 1/2ln(cos x/2)+c (D) 1/2ln(s in x/2)+c

int(dx)/(x^2+2x+2) equals(A) xtan^(-1)(x+1)+C (B) tan^(-1)(x+1)+C (C) (x+1)tan^(-1)x+C (D) tan^(-1)x+C

int(cos e c^2x-2005)/(cos^(2005)x)dx is equal to (a) -(cotx)/((cosx)^(2005))+c (b) (tanx)/((cosx)^(2005))+c (c) -(tanx)/((cosx)^(2005)+c (d) none of these