Question 767190
(1 - cosq)/(1 + cosq) = 2cotq(cotq - cosecq) + 1

(1 - cosq)/(1 + cosq) 


{{{((1 - cosq)/(1 + cosq))*((1 -cosq)/(1 - cosq))}}} 





{{{(1-cos(q))^2/(1-cos^2(q))}}}







{{{(1-2cos(q)+cos^2(q))/(sin^2(q))}}}



{{{cosec^2(q) -2cos(q)*cosec^2(q)+cot^2(q)}}}




{{{1+cot^2(q) -2cos(q)*cosec^2(q)+cot^2(q)}}}


{{{1+2cot^2(q) -2cot(q)*cosec(q)}}}



{{{1+2cot(q)(cot(q)-cosec(q))}}}