Question 1075576
<pre>
It's "theta", not "thita", pronounced "THAY-tuh"

{{{cot(theta)(tan(theta)^""+sin(theta))}}}

{{{cot(theta)tan(theta)+cot(theta)sin(theta))}}}

Use the two identities for the cotangent:
       {{{cot(theta)=1/tan(theta)}}} and {{{cot(theta)=cos(theta)/sin(theta)}}}

{{{expr(1/tan(theta))tan(theta)+expr(cos(theta)/sin(theta))sin(theta)}}}

{{{expr(1/cross(tan(theta)))cross(tan(theta))+expr(cos(theta)/cross(sin(theta)))cross(sin(theta))}}}

{{{1+cos(theta)}}}

Edwin</pre>