" b) "quad 14.quad (1+cot alpha+cosec alpha)/(1-cot alpha+cos ec alpha)=

(1+cot alpha+cos ec alpha)/(1-cot alpha+cos ec alpha)=

(1+cot alpha+cos ec alpha)/(1-cot alpha+cos ec alpha)=

(1+cot alpha+cos ec alpha)/(1-cot alpha+cos ec alpha)

Prove that (cot alpha+cos ec alpha-1)/(cot alpha-cos ec alpha+1)=(1+cos alpha)/(sin alpha)

1+(cot^(2)alpha)/(1+cos ec alpha)=cos ec alpha

cot alpha+cot(60+alpha)-cot(60-alpha)=3cot3 alpha

Show that 1 + cot^2 alpha / (1+ cosec alpha) = cosec alpha

Show that 1+cot^2alpha/(1+cosecalpha)=cosec alpha

Prove that : [1+ cot alpha- sec (pi/2+alpha)] [1+ cot alpha+ sec (pi/2+alpha)]= 2 cot alpha .

1/(cos alpha + cos 3 alpha)+ 1/(cos alpha + cos 5 alpha)+ 1/(cos alpha + cos 7 alpha) +....+ 1/(cos alpha +cos(2n+1) alpha) = 1/2 "cosec" alpha[tan (n+1) alpha - tan alpha ]