Question 746556
{(sec(x)sin(x))/(tan(x))}-1=0 
{{{(sec(x)sin(x)/tan(x))-1=0}}}
start with left side:
{{{(sec(x)sin(x)/tan(x))-1}}}
{{{(sec(x)(1/csc(x))/(sin(x)/cos(x)))-1}}}
{{{((sec(x)/csc(x))/(sin(x)/cos(x))-1)}}}
{{{((sec(x)cos(x))/(csc(x)sin(x))-1)}}}
{{{((1)/(1)-1)=0}}}
verified: left side=right side=0