" [7] Tf "cos A=(1)/(2)" ,find the value of "(2sec A)/(1+tan^(2)A)

If cos theta=(1)/(2), find the value of (2sec theta)/(1+tan^(2)theta)

Find the value of: sec^2(tan^-1(2))

Find the value of sec(tan^(-1)((y)/(2)))

What is the value of sec^(2)(tan^(-1)2)

Find the value of sec^(-1)(-2)+tan^(-1)(-1/sqrt3)

Find the value of sec^(-1)(-2)+tan^(-1)(-1/sqrt3)

Find the value of : sec(cos^(-1)(2/3))

Find the value of : sec(cos^(-1)(2/3))

Find the principal value of "cos"^(-1)(-1/(2)) and find the value of "cos"^(-1)(-1/(2))+"tan"^(-1)(-sqrt(3))-"cosec"^(-1)(2) .

If cos ec A=2, find the value of (1)/(tan A)+(sin A)/(1+cos A)