[x=cos1^(@),y=cos1rArr],[[" 1) "x=y," 2) "x>y," 3) "x

If x=cos 1 , y= cos1^(@) then

Let A = [[cos ^ (- 1) x, cos ^ (- 1) y, cos ^ (- 1) zcos ^ (- 1) y, cos ^ (- 1) z, cos ^ (- 1) xcos ^ (- 1) y, cos ^ (- 1) z, cos ^ (- 1) xcos ^ (- 1) z, cos ^ (- 1) x, cos ^ (- 1) y]] such x + y + z is

Let A=[(cos^(- 1)x,cos^(- 1)y,cos^(- 1)z),(cos^(- 1)y,cos^(- 1)z,cos^(- 1)x),(cos^(- 1)z,cos^(- 1)x,cos^(- 1)y)] such that |A| = 0 , then maximum value of x + y + z is

If : cos^(-1)x+cos^(-1)y+cos^(-1)z=3pi, " then :" x (y+z)+y(z+x)+z(x+y)=

If y=cos(2cos^(-1)x)," then "y''=

If cos^(-1)x +cos^(-1)y +cos^(-1)z =3pi then x+y+z is :

If cos(x-y)=1 then cos x+cos y=

The solution of the differential equation (x^(2)dy)/(dx)cos((1)/(x))-y sin((1)/(x))=-1, where y rarr las x rarr oo is (A) y=sin((1)/(x))+cos((1)/(x))(B)y=(x+1)/(x sin((1)/(x))) (C) y=sin((1)/(x))-cos((1)/(x))(D)y=(x)/(x cos((1)/(x)))

lim_(x rarr0)(cos2x-1)/(cos x-1)