Find the value of `2+1/(2+1/(2+1/(2+oo)))`

If cosx/2dotcosx/(2^2)dotcosx/(2^3)oo=(sinx)/x , then find the value of 1/(2^2)sec^2x/2+1/(2^4)sec^2x/(2^2)+1/(2^6)sec^2x/(2^3)+oo

Find the value of tan [1/2 sin^(-1) ((2a)/(1+a^(2))) + 1/2 cos^(-1) ((1-a^(2))/(1+a^(2)))]

If (x^(+(1)/(2)) + x^(-(1)/(2)))^(2) = (9)/(2) , then find the value of (x^((1)/(2))-x^(-(1)/(2))) for x gt 1 .

Find the value of 2cos^(-1)((1)/(2))+sin^(-1)((1)/(2))

Find the value of 2 cos ^(-1) (1/2) +sin^(-1) (1/2)

Find the value of cos^(-1)((1)/(2))+sin^(-1)(-1)