Find the number of solution of the equation `(pi/4+1/2cos^-1 x)+tan(pi/4-1/2 cos^-1 x)=1.`

Number of solutions of the equation cos^(-1)(1-x)-2cos^(-1)x=pi/2 is

Find the number of real solutions of the equation sqrt(1 + cos 2x) = sqrt2 cos^-1 (cosx) , where x in [pi/2 , pi]

tan(pi/4+1/2cos^-1x)+tan(pi/4-1/2cos^-1x) , x!=0 is equal to

Find the number of solution(s) of the equation cos (pi sqrt(x)) cos (pi sqrt(x-4))=1 .

Find the number of solution(s) of the equation cos (pi sqrt(x)) cos (pi sqrt(x-4))=1 .

Number of solutions (s) of the equations cos^(-1) ( 1-x) - 2 cos^(-1) x = pi/2 is

Number of solutions (s) of the equations cos^(-1) ( 1-x) - 2 cos^(-1) x = pi/2 is