" Ret "quad " on "x" ,"quad 2cos^(-1)x=cos^(-1)(2x-1)

2cos^(-1)x=cos^(-1)(2x^(2)-1)

Formula for 2cos^(-1)x and 3cos^(-1)x

Solve equation "cos"^(-1)(x+1/2)+"cos"^(-1)x

Prove that cos^(-1){(1+x)/2}=(cos^(-1)x)/2

cos^(-1).((2x)/(1+x^(2)))

Prove that cos^(-1){(1+x)/(2)}=(cos^(-1)x)/(2)

If quad cos^(-1)x<1 and 1+sin(cos^(-1)x)+sin^(2)(cos^(-1)x)+sin^(3)(cos^(-1)x)+...oo=2 then the value of 12x^(2) is

If 0

If 0 lt cos^(-1)x lt 1 and 1+sin(cos^(-1)x)+sin^(2)(cos^(-1)x)+sin^(3)(cos^(-1)x)+…infty=2 , then the value of 12x is