Question 753040
{{{(1+tan^2(A ))/(sec^2(A) *sin(A))}}}....use identity {{{1+tan^2(A) =sec^2(A)}}}


{{{sec^2(A) / (sec^2(A) *sinA)}}}


{{{cross(sec^2)(A) / (cross(sec^2(A ))*sin(A))}}}


{{{1 / sin(A)}}}


{{{csc(A)}}}