Question 391208
We want to show that {{{tan(x)csc(x) = sec(x)}}}. Rewriting everything in terms of sin and cos,


{{{(sin(x)/cos(x))(1/sin(x)) = 1/cos(x)}}} Cancel out sin(x) to obtain


{{{1/cos(x) = 1/cos(x)}}} which is true for all x that makes the values defined.