(sin theta)/(sec theta+tan theta-1)+(cos theta)/(cos ec theta+cot theta-1)=(pi)/(2)

Prove that (sin theta)/(sec theta+tan theta-1)+cos theta/(cosec theta+cot theta-1)=1

(sin theta)/(1-cos theta)=cos ec theta+cot theta

(tan theta)/(sec theta-1)+(tan theta)/(sec theta+1)=2cos ec| theta

(sin theta)/(cot theta+cos ec theta)-(sin theta)/(cot theta-cos ec theta)=

(cos theta)/(cos ec theta+1)+(cos theta)/(cos ec theta-1)=2tan theta

(tan theta)/(sec theta-1)-(sin theta)/(1+cos theta)=2cot theta

(tan theta)/(sec theta+1)+(sec theta+1)/(tan theta)=2cos ec theta

Prove the following identities: (sin theta)/(1-cos theta)+(tan theta)/(1+cos theta)=sec theta cos ect+cot theta

(sin theta)/(1-cos theta)+(tan theta)/(1+cos theta)=sec theta cos ec theta-cot theta

Prove the following identity : (sin theta)/(1+cos theta)+ (tan theta)/(1+cos theta)= sec theta cosec theta- cot theta .