Question 969474
Here is a start, only:


The left side:


{{{cos(x)/sin(x)+1/sin(x)+1/cos(x)}}}


{{{(cos(x)/sin(x))(cos(x)/cos(x))+(1/sin(x))(cos(x)/cos(x))+(1/cos(x))(sin(x)/sin(x))}}}


{{{(cos^2(x)+cos(x)+sin(x))/((sin(x))(cos(x)))}}}


I have not worked all the way through this.  Could you continue it?